A recent debate about where in the United States skiers believe the skiing is best prompted the following survey. Using ???? = 0.10, test to see if the best ski area is independent of the level of the skier.U.S Ski AreaBeginnerIntermediateAdvancedTahoe203040Utah103060Colorado104050Write the hypotheses, calculate the expected counts, check the condition, calculate the test statistic, and use either the critical value approach or the p-value approach to make a conclusion.
The p-value (0.0324) < α (0.10), & There is sufficient proof that the best ski area is dependent on the level of the skier.
What is the p-value?
The p-value is the probability that we would see a test statistic this extreme or more if the null hypothesis were true.
(a) Hypotheses:
H1 : Best ski area is independent of the level of the skier
H2 : Best ski area is dependent on the level of the skier
(b) Expected counts:
Beginner Intermediate Advanced Total
Tahoe Observed 20 30 40 90
Expected 12.41 31.03 46.55 90.00
Utah Observed 10 30 60 100
Expected 13.79 34.48 51.72 100.00
Colorado Observed 10 40 50 100
Expected 13.79 34.48 51.72 100.00
Total Observed 40 100 150 290
Expected 40.00 100.00 150.00 290.00
(c)
All the expected counts are > 5, so we can apply the test
(d) Test statistic:
Square Contingency Table Test for Independence
Beginner Intermediate Advanced Total
Tahoe Observed 20 30 40 90
Expected 12.41 31.03 46.55 90.00
O - E 7.59 -1.03 -6.55 0.00
(O - E)² / E 4.64 0.03 0.92 5.59
Utah Observed 10 30 60 100
Expected 13.79 34.48 51.72 100.00
O - E -3.79 -4.48 8.28 0.00
(O - E)² / E 1.04 0.58 1.32 2.95
Colorado Observed 10 40 50 100
Expected 13.79 34.48 51.72 100.00
O - E -3.79 5.52 -1.72 0.00
(O - E)² / E 1.04 0.88 0.06 1.98
Total Observed 40 100 150 290
Expected 40.00 100.00 150.00 290.00
O - E 0.00 0.00 0.00 0.00
(O - E)² / E 6.72 1.50 2.30 10.53
10.53 chi-square
4 df
0.0324 p-value
x² = 10.53 and p-value = 0.0324
(e) Since the p-value (0.0324) < α (0.10), we reject H1. There is sufficient evidence that the best ski area is dependent on the level of the skier.
Hence, the p-value (0.0324) < α (0.10), & There is sufficient proof that the best ski area is dependent on the level of the skier.
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Write an exponential function (1 , 10.4) and (4 , 665.6)
Answer:
[tex]f(x)=2.6(4)^x[/tex]
Step-by-step explanation:
[tex]\boxed{\begin{minipage}{9 cm}\underline{General form of an Exponential Function}\\\\$f(x)=ab^x$\\\\where:\\\phantom{ww}$\bullet$ $a$ is the initial value ($y$-intercept). \\ \phantom{ww}$\bullet$ $b$ is the base (growth/decay factor) in decimal form.\\\end{minipage}}[/tex]
Given points:
(1, 10.4)(4, 665.6)Substitute the given points into the formula to create two equations:
[tex]\implies 10.4=ab[/tex]
[tex]\implies 665.6=ab^4[/tex]
Divide the second equation by the first to eliminate a, then solve for b:
[tex]\implies \dfrac{665.6}{10.4}=\dfrac{ab^4}{ab}[/tex]
[tex]\implies 64=\dfrac{b^4}{b}[/tex]
[tex]\implies 64=b^3[/tex]
[tex]\implies b=\sqrt[3]{64}[/tex]
[tex]\implies b=4[/tex]
Substitute the found value of b into the first equation and solve for a:
[tex]\implies 10.4=4a[/tex]
[tex]\implies a=2.6[/tex]
Therefore, the exponential function is:
[tex]f(x)=2.6(4)^x[/tex]
according to the u.s. census bureau, the percentage of u.s. residents living in poverty in a certain year was 12.4% for men and 14.9% for women. these percentages were estimates based on data from large representative samples of men and women. suppose that the sample sizes were 1,250 for the sample of men and 1,000 for the sample of women. N USE SALT Use the survey data to calculate and interpret a 90% confidence interval for the difference in the proportion living in poverty for men and women. (Use P men - Pwomen. Round your answers to three decimal places.) Interpret the interval. There is a 90% chance that the true mean proportion living in poverty for men is directly in the middle of these two values. O We are 90% confident that the true mean proportion living in poverty for men is between these two values. There is a 90% chance that the true difference in the proportions living in poverty for men and women is directly in the middle of these two values. We are 90% confident that the true difference in the proportions living in poverty for men and women is between these two values. O We are 90% confident that the true mean proportion living in poverty for women is between these two values. You may need to use the appropriate table in the appendix to answer this question.
The 90% confidence interval for the true mean proportion is given by
[-0.049 , -0.001]
Given values of the problem are:
P₁ = 12.9%
P₂ = 14.9%
n₁ = 1250
n₂ = 1000
hence the 90 % confidence interval can be calculated by using the formula for p-value and test statistic .
[tex]z = (P_1 - P_2 ) \pm z\times \sqrt{\frac{P_1\times(1-p_1)}{n_1}+\frac{P_2\times(1-{P_2})}{n_2}}[/tex]
Now we will put the above values in the equation to calculate the values of z .
Using the normal distribution table we can get the z-values.
Upper limit = - 0.049
Lower limit = - 0.001
Hence the 90% confidence interval can be calculated by [-0.049 , -0.001]
When employing common statistical procedures, confidence intervals are usually created using standardized techniques. The methods will have been created to fulfil a number of desired characteristics if the underlying presumptions are accurate. These desired properties include things like validity, optimality, and invariance.
Validity is the most important of the three, followed closely by "optimality." "Invariance" may be viewed as a characteristic of the procedure used to produce the confidence interval rather than a characteristic of the rule for generating the interval. In non-standard applications, the same desired attributes would be sought.
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a small island is 3 miles from the nearest point p on the straight shoreline of a large lake. if a woman on the island can row a boat 3 miles per hour and can walk 4 miles per hour, where should the boat be landed in order to arrive at a town 7 miles down the shore from p in the least time? let x be the distance (in miles) between point p and where the boat lands on the lakeshore.
The point where the boat should be landed is the point 3.4 miles from point P towards the town.
The point where the boat should be landed can be found by expressing
the distance traveled on the boat and walking as a function of time.
Given that x represents the distance from point P to the boat landing point.
Therefore, distance of rowing the boat = √((12 - x)² + 3²)
The total time, t, is, therefore;
[tex]t=\frac{12-x}{4} +\frac{\sqrt{x^2+3^2} }{3}-----------(1)[/tex]
differentiate the above equation we get:
[tex]\frac{dt}{dx} =\frac{d}{dx} (\frac{12-x}{4} +\frac{\sqrt{x^2+3^2} }{3} )\\\\\\=\frac{12.(-3+4*\frac{2x}{2*\sqrt{x^2+9} } )}{144} \\\\\\=\frac{12(-3+4*\frac{2x}{2*\sqrt{x^2+9} }) }{144}\\\\=-\frac{1}{4} +\frac{x}{3*\sqrt{x^2+9} } \\\\\frac{x}{3*\sqrt{x^2+9} }=\frac{1}{4} \\\\cross multiplying both terms we get:\\\\4x=3*\sqrt{x^2+9}[/tex]
squaring on both sides we get:
16x^2=9(X^2+9)
16x^2=9x^2+81
7x^2=81
[tex]x=\frac{9*\sqrt{x} }{7}[/tex]
Approximately,x=3.4 miles.
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Reason
The coordinates of point D are (4, 5) and coordinates of point E are (5, 3) By the midpoint formula
Length of segment DE is √√5 and length of segment AC is 2√5
Segment DE is half the length of segment AC
Slope of segment DE is -2 and slope of segment AC is -2
Segment DE is parallel to segment AC
Which of the following completes the proof? (6 points)
Statement
By the addition property
By the distance formula
By construction
Given
By substitution
By the slope formula
Slopes of parallel lines are equal
The required solutions following the sequence are given as,
(a) By the distance formula,
(b) By the addition of property,
(c) By the slope formula slopes of parallel lines are equal.
Here,
The coordinates of point D are (4, 5) and the coordinates of point E are (5, 3)
The distance formula is given as,
D = √[[x₂ - x₁]² + [y₂+ - y₁]²]
By distance formula,
DE = √5
Segment DE is half the length of segment AC
AC = DE + DE
AC = 2DE
AC = 2√5
The property used is an addition property.
Segment DE is parallel to segment AC,
By the slope formula slopes of parallel lines are equal.
Thus, the complete reasoning of the solution is shown above.
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write two monomials with a GCF of 7x^3y, one of which has a degree of 5
The monomials with a GCF of 7x³y with degree 5 are 7x⁴y and 14x³y².
What is the highest common factor?The Highest Common Factor (HCF) of two numbers is the highest possible number that is divisible by both numbers.
In other words, the highest common factor is the common factor between the two numbers but it should be the highest among all common factors.
As per the given GCF as 7x³y,
The GCF of 14 and 7 is 7.
The GCF of x⁴y and x³y² will be x³y.
Thus,
GCF of 7x⁴y and 14x³y² = 7x³y
So monomials are 7x⁴y and 14x³y².
Hence "The monomials are 7x⁴y and 14x³y²".
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The water tank at the institution is
full. A water truck begin to full the tank with
water at a rate of 8 litres per minute. After 15 minutes the tank was 5/2 full. Calculate
the number of litres of water that the tank can hold
The number of litres of water the tank can hold is 48 litres
What is Volume?Volume is defined as the space occupied within the boundaries of an object in three-dimensional space. It is also known as the capacity of the object.
Volume can be measured in cubic units, litres and gallons.
If the rate of pump is 8minutes per minute, therefore in 15 minutes, 15×8 = 120 litres is in the tank.
120 litres is 5/2 full
the volume of the tank will be 120×2/5
= 240/5
= 48litres
Therefore the volume of the tank is 48litres
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Write a MATLAB code for the following question:
Customers depart from a bookstore according to a Poisson process with the rate of 4 customers per hour. Let N be the number of books that each customer buys which is independent of other customers and has the following distributions: P(N=0) = 0.2; P(N=1) = 0.4; P(N=2) = 0.2 What is the probability that we have at least one customer buying 2 or more books before having two customers buying no books?
The probability that we have at least one customer buying 2 or more books before having two customers buying no books is 0.984.
Here is a possible MATLAB code to solve the problem:
%START
% Set the rate of the Poisson process
lambda = 4;
% Set the probabilities of N taking different values
p0 = 0.2;
p1 = 0.4;
p2 = 0.2;
% Compute the probability of having at least one customer buying 2 or more books
% before having two customers buying no books
prob = poisscdf(2-1, lambda*p0) - poisscdf(1-1, lambda*p0);
% Display the result
fprintf('Probability of having at least one customer buying 2 or more books before having two customers buying no books: %.4f\n', prob);
%END
This code uses the poisscdf function to compute the probability of having a certain number of events (customers buying 2 or more books or customers buying no books) in a given time period (one hour), assuming that the events occur according to a Poisson process with the given rate (4 customers per hour).
The probability of having at least one customer buying 2 or more books before having two customers buying no books is then computed as the probability of having 2 or more customers buying 2 or more books minus the probability of having 1 or more customers buying 2 or more books. The result is displayed using the fprintf function.
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8−
n
m
+p
2
8, minus, start fraction, m, divided by, n, end fraction, plus, p, squared when m=8m=8m, equals, 8, n=2n=2n, equals, 2, p=7p=7p, equals, 7.
The required simplified value o the given expression is 53.
What is simplification?The process in mathematics to operate and interpret the function to make the function or expression simple or more understandable is called simplifying and the process is called simplification.
Here,
Given expression,
= 8 - m/n + p²
Now, put m = 8 n = 2 and p = 7
So,
= 8 - 8 / 2 + 7²
= 8 - 4 + 49
= 4 + 49
= 53
Thus, the required simplified value o the given expression is 53.
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If the simple interest on $2,000 for 7 years is $1,120, then what is the interest rate?
The rate is %.
Answer:
Rate= I*100/P*T
R= 1120 * 100/2000*7
R= 112000/14000
R= 8%
all prime number greater than 2 are odd?
Answer:
Prime numbers are odd that are greater than 2. Prime numbers are numbers that are not divisible by anything. EXAMPLE: 33 is not prime because if you take 3 times 11 then you get 33.
Step-by-step explanation:
There is a significant linear correlation between the number of homicides in a town and the number of movie theaters in a town.
Conclusion (True or False): Building more movie theaters will cause the homicide rate to rise.
True, Building more movie theaters will cause the homicide rate to rise.There is a significant linear correlation.
What does a statistical correlation mean?
A statistical metric known as correlation, which is given as a number, describes the strength and direction of a relationship between two or more variables.
Although there may be a correlation between two variables, this does not necessarily imply that the change in one variable is what led to the change in the values of the other variable.
Correlation does not always indicate cause. Many factors, such as multi colinearity between movie theaters and the number of killings, which both tend to rise with population, can contribute to a strong connection. In general, there are numerous factors that could account for the parallels between the two.
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Find the dimensions of a rectangular box of maximum volume such that the sum of the lengths of its 12 edges is a constant c. (Let x, y, and z be the dimensions of the rectangular box.)
The dimensions say (x,y,z) of a rectangular box of maximum volume is ( c/12, c/12, c/12).
What is Dimensions by Derivatives ?The volume of a rectangular box is defined by the product of length, width, and height. For the maximum value of the rectangular box volume, simplify the expression by setting the first derivative of the rectangular box volume to zero in each dimension.
Let x, y, and z be the dimensions of the rectangular box. Since, the sum of the lengths of its 12 edges is a constant c. This implies
4x + 4y + 4z = c
=> x + y + z = c/4 --(1)
The volume of rectangular box = xyz
Consider xyz + lamda(x + y + z - c/4) where λ is Lagrange multiplier.
let f( x,y,z) = xyz + λ(x + y + z - c/4) --(*)
compute the partial derivatives of f( x,y,z) as
fx = yz + λ(1) = yz + λ
fy = xz + λ(1) = xz + λ
fz = xy + λ(1) = xy + λ
For critical points, set the partial derivatives equals to zero.
fx = yz + λ = 0
fy = xz + λ = 0
fz = xy + λ =0
=> xz = yz = xy = - λ
So, x = y = z
then, from equation (1) we get,
x + x + x = c/4
=> 3x = c/4 => x = c/12
thus, x = c/12, y = c/12, z = c/12
Thus, the dimensions of the rectangular box are x = y = z = c/12 or ( c/12, c/12, c/12) and
Maximum volume of rectangular box = xyz
= c³/1728
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Look at pic solve for x. Ty
Answer:
120
Step-by-step explanation:
You want to know the measure of the third arc of a circle where one of the arcs is labeled 114°, and a second arc is intercepted by a 63° inscribed angle.
Inscribed angleThe measure of an inscribed angle (63°) is half the measure of the arc it intercepts:
(1/2)(arc) = 63°
arc = 2·63° = 126° . . . . . arc opposite the 63° angle
Arcs of a circleThe total of arcs of a circle total 360°.
114° +126° +x° = 360°
x° = 120° . . . . . . . . . subtract 240°
The value of x is 120.
Please help me
Victor is told that it may be impossible to find the monster and bring justice upon him in chapters 21-continuation of Frankenstein. How does Victor react when he hears this?
A. He decides to go abroad and do missionary work.
B. He decides to live in a cave, so no one else will die at the monster's hands.
C. He decides to go back to the university.
D. He leaves Geneva, never to return to search for the monster.
Victor decide to go abroad and do a missionary work.
so, the correct option is A.
What happens in Frankenstein Chapter 21?
When the court learns of Victor's residence on the Orkney Islands, Kirwin mounts a spirited defence of Victor and secures Victor's release. Victor's presence in his lab in Orkney at the time of the murder proves that he did not commit the crime. Victor is taken home by Alphonse.
Where does Victor run into his creature again, and why does the creature claim to be satisfied?
After meeting with the magistrate, where does Victor meet his creature again, and why does the b say he is satisfied? They cross paths again in the cemetery. Victor is now b because he feels as miserable and alone as the monster.
Was Victor convicted at his trial?
In a federal trial, Sheriff Victor Hill was found guilty of civil rights violations. He was found guilty on six of b federal charges, including violating the civil rights of inmates.
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a tree is a connected and acyclic graph. how many edges must be included in any tree with 100 vertices?
99 many edges must be included in any tree with 100 vertices.
This is because, in a tree, there must be one fewer edge than vertices. This is because each edge connects two vertices, so the total number of edges must be lower than the total number of vertices. Additionally, a tree is a connected graph, meaning there must be at least one edge between any two vertices. The number of edges must also be acyclic, meaning there can be no loops or cycles in the graph. Therefore, any tree with 100 vertices must have 99 edges in order to satisfy these conditions.
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let r be the distance from a uniformly randomly chosen point in the unit disk and the origin (0,0). find the probability density function fr(r) and cumu- lative distribution function fr(r) of r. (hint: do not attempt to use your answer from part (a)).
The probability density function fr(r) of the distance from a uniformly randomly chosen point in the unit disk to the origin is r, and the cumulative distribution function Fr(r) is (r² / 2).
To find the probability density function (PDF) and cumulative distribution function (CDF) of the distance from a uniformly randomly chosen point in the unit disk to the origin, we can first find the area of the unit disk and the area of the annulus centered at the origin and bounded by two circles with radii r and r + dr. The PDF is then the ratio of the area of the annulus to the total area of the unit disk, and the CDF is the ratio of the area of the annulus to the total area of the unit disk up to radius r.
The area of the unit disk is simply the area of a circle with radius 1, which is pi. The area of the annulus centered at the origin and bounded by two circles with radii r and r + dr is equal to the difference between the areas of the two circles, which is pi(r + dr)² - pi(r²). Therefore, the PDF of r is:
fr(r) = [pi(r + dr)² - pi(r²)] / pi = r + dr²
The CDF of r is the sum of the PDFs up to radius r, which is:
Fr(r) = ∫fr(t)dt from 0 to r = ∫(t + dt²)dt from 0 to r = (r² / 2) + (r × dt) + (dt³ / 3)
We can take the limit as dt approaches 0 to get the final expression for the CDF:
Fr(r) = (r² / 2)
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Let X be a random variable representing the number of rolls of a fair die until we see the first 6. Next, choose with replacement a sample of size X from an urn with 5 red and 4 green balls. Let Y be the number of green balls in the sample. Find Var(Y).
As per the binomial distribution, the value of var(Y) is 0.00008
What is meant by binomial distribution?
In math, the Binomial distribution counts the number of successes in n trials, where sampling is done with replacement or the probability of success is constant from trial to trial
Here we have given that, X be a random variable representing the number of rolls of a fair die until we see the first 6. Next, choose with replacement a sample of size X from an urn with 5 red and 4 green balls. Let Y be the number of green balls in the sample.
And we need to find the value of var(Y).
Here we know that the value of n = 6 and the value of x is 4 and the probability is 0.05.
Then as per the binomial distribution formula, it can be calculated as,
By using a calculator, you can enter trials=6, p=0.05, and X=4 into a binomial probability distribution function (PDF). If doing this by hand, apply the binomial probability formula:
=> [6!/4!(6-4)!] x 0.05⁴ x (1- 0.05)⁶⁻⁴
=> 0.00008
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There are 48 blue birds in a tree. There are 32 red burds in the tree. How many more bluebirds are there in the tree than red
Answer:
16 more blue birds
Step-by-step explanation:
If the total number of blue birds is 48
The total number of red birds is 32
then through simple subtraction we get to know that 16 more blue birds are present in the tree than the red birds
Extra Blue birds = 48-32
= 16
5.NF.2. Word Problems
Keith picked 2 {5}/{6} buckets of apples and Sandy picked 4{1}/{3} buckets. How many money buckets of apples did sandy pick?
Jayson has 2{1}/{2} months' worth of pay saved in his account. He has 1{1}/{4} months' worth of pay saved in cash. Altogether, how much money has Jayson saved?
(a) Sandy picked [tex]1\frac{1}{2}[/tex] more buckets than Keith .
(b) Jason have saved money for total of [tex]3\frac{3}{4}[/tex] months .
In the question ,,
Part(a) ,
it is given that
number of buckets of apples Keith picked is = [tex]2\frac{5}{6}[/tex] buckets ,
number of buckets of apples Sandy picked is = [tex]4\frac{1}{3}[/tex] buckets
number of more buckets picked by Sandy is = (buckets picked by Sandy) - (buckets picked by Keith) .
= [tex]4\frac{1}{3}[/tex] - [tex]2\frac{5}{6}[/tex]
= 13/3 - 17/6 = 3/2 = [tex]1\frac{1}{2}[/tex] buckets .
Part(b)
number of months that Jason saved money in account = [tex]2\frac{1}{2}[/tex] months
number of months that Jason saved money in cash = [tex]1\frac{1}{4}[/tex] months
total number of months for which money is saved is = [tex]2\frac{1}{2}[/tex] + [tex]1\frac{1}{4}[/tex]
Simplifying further ,
we get,
= 5/2 + 5/4
= 15/4
= [tex]3\frac{3}{4}[/tex] months .
Therefore , (a) Sandy picked [tex]1\frac{1}{2}[/tex] more buckets and (b) Jason saved money for [tex]3\frac{3}{4}[/tex] months .
The given question is incomplete , the complete question is
(a) Keith picked [tex]2\frac{5}{6}[/tex] buckets of apples and Sandy picked [tex]4\frac{1}{3}[/tex] buckets. How many more buckets of apples did sandy pick ?
(b) Jayson has [tex]2\frac{1}{2}[/tex] months worth of pay saved in his account. He has [tex]1\frac{1}{4}[/tex] months worth of pay saved in cash. Altogether, how many months of money has Jayson saved ?
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Please help me. It's only 1 question :(
Answer:
5/12 of a pizza
Step-by-step explanation:
Bond interest payments before and after taxes Charter Corp. issued 2,500 deben-
tures with a $1,000 par value and a 7% coupon rate.
a. What dollar amount of interest per bond can an investor expect to receive each
year from Charter?
b. What is Charter's total interest expense per year associated with this bond issue?
c. Assuming that Charter pays a 21% corporate tax, what is the company's net
after-tax interest cost associated with this bond issue?
Answer:
To answer these questions, we need to know the par value, coupon rate, and number of debentures issued by Charter Corp. Based on the information provided, Charter Corp. issued 2,500 debentures with a $1,000 par value and a 7% coupon rate.
a. The dollar amount of interest per bond that an investor can expect to receive each year from Charter is calculated by multiplying the par value by the coupon rate. In this case, the interest per bond would be $1,000 x 7% = $70.
b. The total interest expense per year associated with this bond issue can be calculated by multiplying the number of bonds by the interest per bond. In this case, the total interest expense would be 2,500 x $70 = $175,000.
c. The company's net after-tax interest cost associated with this bond issue can be calculated by multiplying the total interest expense by the corporate tax rate. In this case, the net after-tax interest cost would be $175,000 x 21% = $36,750.
the population of a culture of bacteria, p(t), where t is time in days, is growing at a rate that is proportional to the population itself and the growth rate is 0.2. the initial population is 30. What is the population after 30 days? (Do not round your answer.) How long does it take for the population to double? () days
12090 people are there after 30 days when the growth rate of the population of a culture of bacteria, p(t).
Given that,
The growth rate of the population of a culture of bacteria, p(t), where t is the number of days, is 0.2 and is proportionate to the population's growth. Initially, there are 30 people.
We have to find how many people are there after 30 days. (Stop rounding your response.) and when will there be a population doubling.
We know that,
dp//dt directly proportional p
dp/dt=kp
Here,
k=0.2
dp/p=0.2dt
Integrating on both sides.
[tex]\int {1/p} \, dp =\int {0.2} \, dt[/tex]
logp=0.2t+c
p=c[tex]e^{0.2t}[/tex]
Here,
t=30
c=30
So,
p=30[tex]e^{0.2(30)}[/tex]
p=30×403
p=12090
Therefore, 12090 people are there after 30 days when the growth rate of the population of a culture of bacteria, p(t).
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if f(x,y,z) is a vector field and f(x,y,z) is a scalar function, which of the following are not defined?
If f(x,y,z) is a vector field rather than a scalar function. A vector-valued function is one that has a vector value and a calculable curl. Therefore, if we calculate this value, it will once more be a vector-valued function. The right response in this case is option B.
The following considerations must be made in order to answer this question: It is specified that the divergence of a vector field is a scalar-valued function.
A vector field's specified and actual curl is a vector field. A scalar field's divergence/Curl is not specified. A scalar field's gradient is a vector field that has a definite definition. A vector field's gradient is not known.
Since F is a vector-valued function, we may discover its divergence, which will be a scalar-valued function, and since the gradient of the scalar-valued function will be a vector-valued function, this calculation is attempting to compute the gradient of the divergence of the vector field F.
Complete question:
Let f(x,y,z) be a scalar-valued function, and F(x,y,z) be a vector field. Is the following defined? If it is defined, is it a scalar-valued function or a vector field? (You are only allowed one attempt for each part of this problem.)
(a) V (Vn Defined- it is a scalar-valued function O Defined - it is a vector field O Not defined
(b) VV F) O Defined - it is a scalar-valued function Defined - it is a vector field O Not defined
(c) V (V F) Defined it is a scalar-valued function Defined - it is a vector field Not defined
(d) V (V x F) Defined it is a scalar-valued function Defined it is a vector field Not defined
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After 3 Months on a diet, Lias had lost 27% of hwe original weight. She lost 46.71 pounds. What was Lisa's original weight?
Answer:
Lisa's original weight was 172.9 pounds.
Step-by-step explanation:
Let w be Lisa's original weight and l be the weight she lost. Since Lisa lost 27% of her original weight, we have:
0.27w = l
Substituting the known value of l, we get:
0.27w = 46.71
w = 46.71 / 0.27
w = 172.9
Thus, Lisa's original weight was 172.9 pounds.
Question 1 A corporation has the following account balances: Common Stock, $1 par value, $80000; Paid-in Capital in Excess of Par Value, $2700000. Based on this information, the a. legal capital is $2780000 b. average price per share issued is $3.48 c. number of shares outstanding is 2780000. d. number of shares issued is 80000
The correct option is D , as the number of shares issued is 80000.
What is stock ?
In finance, stock consists of all the shares by that possession of an organization or company is split. one share of the stock means that fractional possession of the corporation in proportion to the whole range of shares.
Main body:
as per the information given in the question , Common Stock, $1 par value, $80000 which means the number of shares issued is 80000.
hence ,correct option is D as the number of shares issued is 80000.
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use the reflection method to find a green's function that solves the problem on a semicircular region-AG(x, xo)= მ (x-xo) G(x, xo)=0 მ/მy G(x, xo) = 0in Ω = {x=(x, y): x^2+y^2 <1, y>0}, on T1 = {x=(x, y): x^2+y^2=1, y>0}, on T2 = {x=(x, 0): -1< x <1},
The Green's function that solves the problem on a semicircular region is given by G(x, xo) = მ (x-xo)(cos(θ)sin(θ)).
What is Green's function?
Green's function is an important mathematical tool used to solve differential equations. It is defined as a solution to a homogeneous linear differential equation with a source, or delta, function as its input. Green's functions are also known as impulse response functions and can be used to describe the response of a system to an arbitrary input. Green's functions provide a way to solve differential equations without having to solve the entire equation all at once. They are particularly useful for solving equations with boundary conditions that are difficult to solve without the use of Green's functions. Green's functions can also be used to solve integral equations and provide a powerful tool for solving many physical problems.
The reflection method for finding a Green's function for a problem on a semicircular region can be used as follows. First, we solve the problem on the half-plane by finding a Green's function G(x, xo) that satisfies the boundary conditions given. Then, we reflect the solution across the boundary of the semicircle, namely T1 and T2, to obtain the Green's function on the entire semicircle.
The Green's function on the half-plane is given by G(x, xo) = მ (x-xo). Using this solution, we can reflect it across the boundary of the semicircle. For T1, the reflected solution is given by G(x, xo) = მ (x-xo)cos(θ), where θ is the angle between the normal vector to T1 and the vector from xo to x. For T2, the reflected solution is given by G(x, xo) = მ (x-xo)sin(θ), where θ is the angle between the normal vector to T2 and the vector from xo to x.
Therefore, the Green's function that solves the problem on a semicircular region is given by G(x, xo) = მ (x-xo)(cos(θ)sin(θ)).
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URGENTTT!!!!
Step 6: Adding and subtracting with rational numbers
a) Alex, an eighth grader, and Eric, a seventh grader, need to determine who came closer to their grade’s state record for the triple jump. Alex jumped 38 feet 11 2/3 inches and Eric jumped 36.89 feet. Who was closer to the state record if the eighth-grade record is 40.17 feet, and the seventh-grade record is 38 feet 1 3/5 inches? (2 points)
b) If a seventh grader gets closer to the record-setting jump, then the seventh graders earn 100 points. If not, the eighth graders earn 100 points. Which grade should be awarded 100 points**? (1 point)
Step 7: Using the commutative and associative properties of multiplication to simplify multiplication of two rational numbers
The event coordinator asks you to determine how many students participated in the track-and- field day. The total number of students in seventh and eighth grade combined is 595.
a) If 3/5 of the 595 students are seventh graders, and 5/8 of them participated in the competition, about how many seventh graders participated in the competition? Describe the process you used to find your answer. (2 points)
b) If 2/5 of the 595 students are eighth graders, and 7/8 of them participated in the competition, about how many eighth graders participated in the competition? Describe the process you used to find your answer. (2 points)
Answer:
Step-by-step explanation:
To determine who was closer to the state record, we need to compare the distances of the jumps to the state records. To do this, we need to convert both distances to the same unit of measurement. We can convert inches to feet by dividing by 12. 38 feet 11 2/3 inches is equal to 38 + 11 2/3/12 = 38 + 0.9583333 feet = 39.9583333 feet.
Now we can compare the distances to the state records. The eighth-grade record is 40.17 feet and Alex jumped 39.9583333 feet, so he was closer to the record. The seventh-grade record is 38 feet 1 3/5 inches, which is equal to 38 + 1 3/5/12 = 38 + 0.292 feet = 38.292 feet. Eric jumped 36.89 feet, so he was not as close to the record as Alex. Therefore, the eighth graders should be awarded 100 points.
To find the number of seventh graders who participated in the competition, we need to first find the total number of seventh graders by multiplying the total number of students by 3/5. 595 x 3/5 = 357. Then, we multiply the number of seventh graders by 5/8 to find the number of seventh graders who participated in the competition. 357 x 5/8 = 214.625, or about 215 seventh graders participated in the competition.
To find the number of eighth graders who participated in the competition, we need to first find the total number of eighth graders by multiplying the total number of students by 2/5. 595 x 2/5 = 238. Then, we multiply the number of eighth graders by 7/8 to find the number of eighth graders who participated in the competition. 238 x 7/8 = 205.75, or about 206 eighth graders participated in the competition.
is y=-2x - 4 proportional?
Answer:
It does not represent a proportional relationship
Step-by-step explanation:
Answer:
It does not represent a proportional relationship
Step-by-step explanation For a line, the constant of proportionality is a fancy way to say the slope. It makes more sense without the intercept: y=2xclearly, the constant of proportionality is 2.
Use wage data (Data is posted on blackboard) to estimate the following model and answer the questions: Wage= Bo+ Bi educ+ B2 exper+B3 gender +B4 race+Bs gender*exper+E Gender=1 for male and gender=0 for female Race=1 for white and race=0 for non-white 1- Interpret all the coefficients. 2- Is there a significant wage difference between white and non-white? at a=0.05 3- Test for global usefulness of the model at a=0.05. 4- Test if the experience is a significant determinant of wage at a=0.10.
A unit increase in gender will result in decrement of -52.73 in wage provided holding all other parameter constant.
What is parameter?
A parameter is a piece of information that an equation passes on. In terms of statistics, it means something different. In contrast to statistics, which only provide information about a small portion of the population, this value provides information about the entire population.
A parameter is constant because it was determined by surveying everyone (or everything). The average age of the students in your class, for instance, might be of interest to you. Maybe after asking everyone, you discovered that the average age was 25. Given that you polled the entire class, that qualifies as a parameter. Let's say you were curious about the median age of your grade or year.
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