The volume of a cone is 125(pi) in3. The height is three time the length of the radius. The height of the cone = 3 × 125π = 375π inches
Given:
Volume of cone = 125π in3
Height = 3 times the radius
To find:
Height of the cone
Height of the cone = 3 × 125π = 375π inches
The given information is the volume of a cone, which is 125π in3, and the height of the cone which is 3 times the radius. To find the height of the cone, we need to multiply the volume by 3. Using the given information, we can calculate the height of the cone by multiplying 125π by 3, which gives us 375π inches as the height of the cone.
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(federal income taxes and piecewise functions mc) determine f(−2) for a piecewise function f of x in three pieces. the function is defined by part 1, which is x cubed for x less than negative 3, part 2, which is 2 times x squared minus 9 for negative 3 is less than or equal to x which is less than 4, and part 3 which is 5 times x plus 4, for x greater than or equal to 4. −1 −6 8 9
Answer:
9
Step-by-step explanation:
Describe all the positive integers that would make (3²)greater than 39. Explain your reasoning
The positive integers that would make (3²)ⁿ greater than 39 are any positive integers greater than 1.
How to describe all the positive integers that would make (3²) greater than 39?An integer means the number zero (0), a positive natural number or a negative integer with a minus sign (−1, −2, −3, etc.).
To see this, we can simply plug in different values for the positive integer and see when(3²)ⁿ becomes greater than 39.
If we plug in 1, we get (3²)ⁿ = 9, which is not greater than 39.
If we plug in 2, we get (3²)ⁿ = 81, which is greater than 39.
Therefore, any positive integer greater than 1 would make (3²)ⁿ greater than 39.
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Possible Question
Describe all the positive integers that would make (3²)ⁿ greater than 39. Explain your reasoning
A group of scientists discovered a small creature at the bottom of the ocean that they called a "piknit". When this interesting creature dies, it explodes itself into a number of baby piknits called gogles. The scientists randomly selected 20 piknits from the sea-floor and measured their respective weights in grams. After the piknits died they counted the number of gogles that each piknit produced. They wanted to know if the weight of the piknits can be used to predict the number of gogles.
What are the appropriate null and alternative hypotheses?
Group of answer choices
H0: There is no linear relationship between the weight of piknits and the number of gogles
Ha: There is a negative linear relationship between the weight of piknits and the number of gogles
H0: Weight of piknits is a useful predictor for the number of gogles
Ha: Weight of piknits is not a useful predictor for the number of gogles
H0: There is a linear relationship between the weight of piknits and the number of gogles
Ha: There is no linear relationship between the weight of piknits and the number of gogles
H0: There is no linear relationship between the weight of piknits and the number of gogles
Ha: There is a linear relationship between the weight of piknits and the number of gogles
The required explanation of null hypothesis and alternate hypothesis for given question is below.
What is hypothesis test?
Hypothesis testing is a type of measurable derivation that utilizes information from an example to make inferences about a populace boundary or a populace likelihood circulation. Initial, a speculative supposition that is made about the boundary or dissemination.
According to question:
Connection is a factual measure that communicates the degree to which two factors are directly related (meaning they change together at a consistent rate).
It's a typical device for portraying basic connections without saying something about circumstances and logical results.
As indicated by the inquiry,
A gathering of researcher haphazardly chose 20 Piknits from the ocean bottom and estimated their particular loads in grams.
Likewise, They were curious as to whether the weight of the Piknits can be utilized to foresee the quantity of Gogles.
From the given data,
Null hypothesis : H0 : There is no direct connection between the heaviness of piknits and the quantity of gogles
Alternative hypothesis : Ha: There is a direct connection between the heaviness of piknits and the quantity of gogles
Choice 4 is right about Null hypothesis and Alternative hypothesis.
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PLEASE HELP MEEEEEEEEEEEEEEE
Answer:
Step-by-step explanation:
(-1 - 3)/(3 - 0) = -4/3
y - 3 = -4/3(x - 0)
y - 3 = -4/3x + 0
y = -4/3x + 3
Find the length of the diagonal triangle using pythagoras theorem.given / = 8cm b=6cm
Answer: 10 cm
Step-by-step explanation:
Given, length=8cm
breadth=6 cm
Pythagoras theorem states that sum of square of base and square of perpendicular height is equal to square of hypotnyse.
Thus, we can write:
Considering, base=length=8cm
Perpendicular=breadth=6cm
Therefore, length of diagonal =√(length∧2+breadth∧2)
=√(8∧2+6∧2) cm
= 10 cm
Therefore the length of diagonal = 10cm.
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a students grade in psycology course is compromised of test (45%) quizzes (35%) papers (10%) and a finale project (10%) his scores for each of the catagories are 75 (test) 85 (quizzes) , 88 (papers), and 90 (final project) whats the answer?
81.3 marks is obtained by the student in psycology course
percentage of marks of test that count for final marks =45 %
percentage of marks of quizzes that count for final marks =35 %
percentage of marks of papers that count for final marks =10 %
percentage of marks of final project that count for final marks =10 %
marks obtained by student in test = 75
marks obtained by student in quizzes = 85
marks obtained by student in papers = 88
marks obtained by student in final project = 90
Total marks obtained = [tex]\frac{45}{100} * 75 + \frac{35}{100} *85 + \frac{10}{100} * 88 +\frac{10}{100} *90[/tex]
Total marks obtained = 33.75 + 29.75 + 8.8 + 9 = 81.3
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how do we decide whether to use a t test or an analysis of variance (anova) to analyze the data from an experiment?
The best way to analyze their data for significance is to Conduct a two-way variable analysis.
As we can see, there is a 2x3 factorial design. Thus, we know that there will be a two level or two way analysis of variables, which is referred to as two way variables analysis. Factorial design is a research method that allows for the inquiry of a main and interaction effects of two or more independent variables on one or more outcome variables (s).
It has been argued that factorial designs represent the true beginning of modern behavioral research and have resulted in a significant paradigm shift in how social scientists conceptualize their research questions and produce objective results (Kerlinger & Lee, 2000).
Factorial design is an experimental methodology that goes beyond standard single-variable experimentation. Previously, social scientists were fixated on single independent variable experiments, foreshadowing the significance of extraneous variables that can attenuate or diminish research findings.
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Parallelogram MNPR has diagonals that intersect at E. In the parallelogram, ME = (7x - 30) cm and PE = (5x-12) cm. What is MP?
A. 9 cm
B. 21 cm
C. 33 cm
D. 66 cm
The measure of the diagonal MP is 66 cm.
What is a parallelogram?A parallelogram is a special type of quadrilateral that has both pairs of opposite sides parallel and equal.
Given that, Parallelogram MNPR has diagonals that intersect at E. In the parallelogram, ME = (7x - 30) cm and PE = (5x-12) cm.
We know that, diagonals of a parallelogram bisects each other,
Therefore, ME = PE
(7x - 30) = (5x-12)
2x = 18
x = 9
ME = PE = 33
MP = ME + PE
MP = 33+33
MP = 66
Hence, The value of MP is 66 cm
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Please complete the proof.
The line l and line m are parallel.
What are parallel lines?Parallel lines are those lines that are equidistant from each other and never meet, no matter how much they may be extended in either directions.
Given that, transversal t cuts line l and line m.
∠2≅∠7
Transversal t cuts line l and line m (Given)
∠2≅∠7 (Given)
∠2≅∠3 (Vertical angles theorem)
∠3≅∠7 (Converse of corresponding angles postulates)
l║m proved
Hence, the line l and line m are parallel.
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Math pls help now. Pl
Answer:
The answer is 44. 10% more than 40 is 40 + 4 = 44.
Step-by-step explanation:
To find 10% more of a number, you can simply multiply the number by 10%. In this case, 10% of 40 is 40 * 0.1 = 4. Therefore, 10% more than 40 is 40 + 4 = 44.
Answer:
110/100 × 40 = 44 ( remember this is not the only ans)
all numbers must be greater than 44
Factor t12 – r3s15. (t4 – rs5)(t8 – rs5t4 – r2s10) (t4 – rs5)(t8 rs5t4 r2s10) (t9 – rs12)(t18 rs12t9 r2s24) (t4 rs5)(t8 – rs5t4 r2s10)
The factor is [tex](t^4+rs^5)(t^8-rs^5t^4+r^2s^{10})[/tex].
Option (D) is correct.
What is factorization?
Factorization or factoring is defined as the breaking or decomposition of an entity (for example a number, a matrix, or a polynomial) into a product of another entity, or factors.
Given:
[tex]t^{12}-r^{3}s^{15}[/tex]
For factorizing the above expression is
now, using the formula
(a³ - b³) = ( a+ b)( a² -ab + b²)
Then,
[tex]=(t^4)^{3}-(rs^{5})^{3}\\=(t^4+rs^5)((t^4)^2-(t^4\timesrs^5)+(rs^5)^2)\\=(t^4+rs^5)(t^8-rs^5t^4+r^2s^{10})[/tex]
Hence, the correct factorization is [tex](t^4+rs^5)(t^8-rs^5t^4+r^2s^{10})[/tex].
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Answer:
B
Step-by-step explanation:
You are intereted in etimating the mean height of bear in the moky mountain. From pat data, you etimate that the tandard deviation to be 10 inche. Uing a 99% confidence level, what ample ize would you need in order to etimate the mean height of all bear in the Smokie within 4 inche of the actual height?
In order to estimate the mean height of all bears in the Smokies within 4 inches of the actual height with a 99% confidence level, you would need a sample size of 25 bears.
You must calculate the sample size using the formula below in order to estimate the mean bear height in the Smokies within 4 inches of the actual height at a 99% confidence level:
n = [tex](\frac{2 X SD}{E})^2[/tex]
Where,
n = sample size
SD = standard deviation of the population (which you have estimated to be 10 inches)
E = margin of error (which you want to be 4 inches)
Putting these values into the formula, we get:
n = [tex](\frac{2 X 10}{4})^2[/tex]
= 25
In order to estimate the mean height of all bears in the Smokies within 4 inches of the actual height with a 99% confidence level, you would need a sample size of 25 bears.
It's important to note that this is only a rough estimate, and the exact sample size may change depending on the population's real characteristics and the level of precision you require. To enhance the accuracy of your estimate, it's also critical to select a sample that is typical of the total population.
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Use a graphing utility to find or to approximate the x-intercepts of the graph of the function.
y = 5x²-24x + 16
Answer: (2.4, -12.8)
Step-by-step explanation:
What is the complete factorization of the polynomial below?
x³ + 2x² + 4x+8
OA. (x-2)(x+2)(x-2)
B. (x-2)(x+2)(x+21)
OC. (x+2)(x+2)(x+2)
OD. (x+2)(x+2)(x-2)
The complete factorization of the polynomial x³ + 2x² + 4x + 8 is
(x² + 4)(x + 2).
What is a factor of a polynomial?We know that if x = a is one of the roots of a given polynomial x - a = 0 is a factor of the given polynomial.
To confirm if x - a = 0 is a factor of a polynomial we replace f(x) with f(a) and if the remainder is zero then it is confirmed that x - a = 0 is a factor.
Given, A cubic polynomial x³ + 2x² + 4x + 8.
Now, Factoring this polynomial,
= x³ + 4x + 2x² + 8.
= x(x² + 4) + 2(x² + 4).
= (x² + 4)(x + 2).
Now, (x² + 4) can not be factored anymore.
So, The factor of x³ + 2x² + 4x + 8 is (x² + 4)(x + 2).
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The table shows the average temperature, in degrees Celsius, in Jacob's city over a period of five months: Month 1 2 3 4 5 Temperature 5 7.2 9.4 11.6 13.8 Did the temperature in Jacob's city increase linearly or exponentially? Linearly, because the table shows a constant percentage increase in temperature each month Exponentially, because the table shows a constant percentage increase in temperature each month Linearly, because the table shows that the temperature increased by the same amount each month Exponentially, because the table shows that the temperature increased by the same amount each month
Linearly because the table shows a constant percentage increase in temperature each month.
What is a linear graph?A graph is a diagram that depicts the relationship or connection between two or more quantities. Linear implies straight. The x and y coordinates of two points are connected by a straight line, or straight graph, to form a linear graph. Everyday life involves the utilization of linear relations, which can be graphed in a plane to produce a straight line.
Calculation:In the first month it is 5
In the second month it is 7.2 so the increment in temperature is 7.2 - 5 = 2.2
In the third month it is 9.4 and the increment in temperature is 9.4 - 7.2 = 2.2
In the fourth month it is 11.6 and the increment in temperatue is 11.6 - 9.4 = 2.2
In the fifth month it is 13.8 and the increment in temperature is 13.8 - 11.6 = 2.2
So the increment is happening linearly
The equation which depicts this is y = (2.2)x+5 where x is the no.of month.
Linearly because the table shows a constant percentage increase in temperature each month.
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what is the value of the t score for a 99.8% confidence interval if we take a sample of size 15?
The value of the Confidence interval will be 3.787
The number of standard deviations from the t-mean distribution is equal to a t-score. The test statistic used in t-tests and regression testing is the t-score. When the data follow a t-distribution, it may also be used to represent how distant an observation is from the mean.
The t-score formula is written as follows:t=¯¯¯x−μS√n t = x ¯ − μ S n , where ¯¯¯x, is the sample mean, is the population mean, S n is the sample size, and x is the standard deviation of the sample. Square root n must be included in the formula.
using tables of t distribution we have
t-score for 99.8%
Confidence Interval (alpha) =1-0.998=0.002
Sample size (n)=15
df=n-1=14
t-score for a 99.8% Confidence Interval will be
t(0.002,14)=3.787
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the value of expression 3y+8 if y = -5 is :
Answer:
-7
*I think*
Step-by-step explanation:
3×(-5)=(-15)
(-15)+8=(-7)
please show your work
The expression simplify value is [tex]48x ^{-9} * y^{10}[/tex]
How do you gradually simplify an expression?Simple Rules and Procedures for Any Algebraic Expression
Remove brackets and parentheses by multiplying the appropriate factors.
If the words have exponents, use the exponent rule to eliminate grouping.
By adding or removing coefficients, combine like terms.
Add the constants together.
An expression constructed using integer constants, variables, and algebraic operations is known as an algebraic expression.
In mathematics, an expression that incorporates variables, constants, and algebraic operations is known as an algebraic expression (addition, subtraction, etc.). Terms comprise expressions.
Simplify and Multiply the numbers.
[tex]6x ^{-9} * 8y^{10} \\48x ^{-9} * y^{10}[/tex]
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Use the net to find the lateral area of the cylinder.
Give your answer in terms of z.
252 ft²
42 ft²
84x ft²
7xft²
lateral area of the cylinder = 2πrh
What is lateral area of the cylinder ?
The lateral area of a cylinder is the area on the outside, meaning if you would cut open a cylinder longitudinally, and folded it open, the rectangle that remains is the lateral area of the cylinder.
Area of rectangle = Lateral area
length is the circumference of the circle = 2πr
and length can be consider as h.
Hence, lateral area of the cylinder = 2πrh.
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In problem 3, the wind blows harder and the top of the
balloon is now 15 feet over from the stake. What is the
height of the balloon now? Draw a diagram to help you
solve the problem and explain your answer.
To solve this problem, we can use the Pythagorean theorem to find the height of the balloon. In particular, we can consider the right triangle formed by the stake, the top of the balloon, and the part of the string that is attached to the stake.
[asy]
unitsize(2 cm);
pair A, B, C, D, E;
A = (0,0);
B = (0,15);
C = extension(A,B,A+(1,0),B+(1,0));
D = extension(A,C,A+(0,1),C+(0,1));
E = extension(B,D,B+(0,-1),D+(0,-1));
draw(A--B--C--cycle);
draw(A--D--E--cycle);
draw(rightanglemark(A,D,C,2));
label("$A$", A, S);
label("$B$", B, N);
label("$C$", C, E);
label("$D$", D, E);
label("$E$", E, W);
[/asy]
Let $a$ be the distance from the stake to the top of the balloon, $b$ be the height of the balloon, and $c$ be the length of the string. We know that $a = 15$ feet and $c = 15$ feet, so we can use the Pythagorean theorem to find $b$:
$a^2 + b^2 = c^2$
$15^2 + b^2 = 15^2$
$225 + b^2 = 225$
$b^2 = 0$
$b = \sqrt{0} = 0$ feet
Therefore, the height of the balloon is 0 feet. This is because the balloon has been pulled up by the wind so that its top is directly above the stake, and therefore its height is 0 feet.
Find the measure of each angle indicated
A. 113 degree
B. 67 degree
Help!!!
Answer:
A. 113 degree
Step-by-step explanation:
These are Alternate Interior Angles, which means the 113-degree angles and the? are equal. So, the answer is A
3. Which equation shows a correct
trigonometric ratio for angle A in the right
triangle below? (MGSE9-12.G.SRT.6)
B
8 cm
A.
B. tan A
sin A =
C. cos A
17 cm
15 cm
D. tan A =
15| 17 3/17 15/17 15-2
8
8
A
Answer:
C) cos A = 15/17
cos A = adjacent/hypotenuse = 15/17
What is trigonometric ratio for right angle triangle?
The trigonometric ratios for a right angle triangle are sine, cosine, and tangent. The sine of an angle is the ratio of the length of the side opposite the angle to the length of the hypotenuse. The cosine of an angle is the ratio of the length of the adjacent side to the length of the hypotenuse. The tangent of an angle is the ratio of the length of the side opposite the angle to the length of the adjacent side.
The following are the trigonometric ratios of a right angle triangle:
Sine (sin): Opposite Side/Hypotenuse
Cosine (cos): Adjacent Side/Hypotenuse
Tangent (tan): Opposite Side/Adjacent Side
Cosecant (csc): Hypotenuse/Opposite Side
Secant (sec): Hypotenuse/Adjacent Side
Cotangent (cot): Adjacent Side/Opposite Side
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PLEASE HELP!!
Ralph and Liza are both driving from Los Angels to Santa Fe. leaves at 7:00 and averages 60 mph (miles per hour) on the way. Liza leaves at 7:25 and averages 65 mph on the way. The situation is modeled by this system, where x is the number of hour after Liza leaves and y is the distance each will travel
y=60x+25
y=65x
How long after Liza leaves will she pas Ralph, and how far will they each have traveled?
A. Liza will not pass Ralph, because she will never catch up with him.
B. Liza will pass Ralph after 3 hour, and they each will have traveled 205 miles.
C. Liza will pass Ralph after 5 hours, and they each will have traveled 325 miles.
D. Liza will pass Ralph after 4 hours, and they each will have traveled 260 miles.
Liza will pass Ralph after 5 hours, and they each will have traveled 325 miles.
What is an expression?Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.
Given that;
The situation is modeled by this system,
⇒ y = 60x + 25
⇒ y = 65x
Where, x is the number of hour after Liza leaves and y is the distance each will travel.
Now,
Since, The situation is modeled by this system,
⇒ y = 60x + 25
⇒ y = 65x
To equate both equation, we get;
⇒ 65x = 60x + 25
⇒ 5x = 25
⇒ x = 5
Thus, Liza will pass Ralph after 5 hours.
And, The distance will they each have traveled is,
⇒ y = 60x + 25
⇒ y = 60 × 5 + 25
⇒ y = 300 + 25
⇒ y = 325 miles
Thus, They each will have traveled 325 miles.
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In Exercises 3 and 4, determine whether the table represents a linear or non linear function. Explain.
Graph 3 - linear
Graph 4 - linear
The line does not touch the same x more than once.
Find the area of the greatest rectangle that can be inscribed in an ellipse (x^2)/(a^2)+(y^2)/(b^2)=1.
2ab is the area of the greatest rectangle that can be inscribed in an ecllipse [tex]\frac{x^2}{a^2} + \frac{x^2}{b^2} = 1[/tex].
The reactangle with the greatest area that can be inscribed in an ecllipse is symmetry with respect to x axis .
we know that (a cos θ ,bsin θ) is the general point on the ecllipse so the others points is (- a cos θ ,bsin θ) , (a cos θ ,-bsin θ) and (-a cos θ ,- bsin θ)
so the length of the rectangle is 2a cos θ and the breadth of the rectangle is 2b sin θ
to area of rectangle = length * breadth
=> 2a cos θ * 2b sin θ
=>4ab sin θ *cos θ
=> 4ab sin 2θ
so area of rectangle (A) = 4ab sin 2θ -----(i)
so get the maximum area dA/dθ =0
=> 4ab *2 cos 2θ =0
=> 8ab cos 2θ=0
=> cos 2θ =0
=> 2θ = π/2
=> θ =π/4
putting the value of θ in equation (i) we get
A = 4ab cos π/4 *sin π/4
A = 4ab *[tex]\frac{1}{\sqrt{2} }[/tex] *[tex]\frac{1}{\sqrt{2} }[/tex]
=> 2ab
so rectangle with largest area inside the ecllipse = 2ab
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x+6/-2= 5
what is x
Answer:
Step-by-step explanation:
x - 3 = 5
(x -3) +3 = 5+3
x - 3 + 3 = 8
so,
x = 8
This graph represents-3x+y=-4.
Which ordered pair is in the solution set of -3x + y 2 -4?
(3-5)
O (1,5)
O (5, -1)
O (5, 1)
3
2
1
-5-4-3-2-1₁-
-3
fr
2 3 4 5 6
X
Answer:
(1,5)
Step-by-step explanation:
when x = 1
[tex]y \geq -4 + 3 (1)\\y \geq -1\\[/tex]
when x = 5
[tex]y \geq -4 + 3(5)\\y \geq 11\\[/tex]
Only (1,5) pair is a solution.
The cost of 4 avocados and 5 tomatoes is $3.76. Six avocados and 3 tomatoes cost $4,02. Find the cost of each avocado and each tomatoe.
Answer:
It costs $0.49 for each avocado and $0.36 for each tomato.
Step-by-step explanation:
This is a system of equations problem.
Let x represent the avocados and y represent tomatoes:
4x + 5y = 3.76 <--- scenario 1
6x + 3y = 4.02 <---- scenario 2
If we graph these out on a graphing calculator, the lines will intersept at point (0.49,0.36)
The x coordinate represents how much it costs for each avacado and the y coordinate represents how much it costs for each tomato
if we repeatedly and infinitely take random samples of size n from a population, what will the distribution of the sample means look like?
When n is large the distribution of the sample means will approach a normal distribution.
The central limit theorem (CLT) is a statistical theory that predicts that given a large enough sample size from a population with a certain level of variation, the mean of all the samples from that population will be close to the population mean.
To put it another way, the central limit theorem predicts with absolute certainty the form of the distribution of means when we take repeated samples from a certain population. In particular, the distribution of means derived from repeated sampling will tend toward normality as sample sizes increase.
In other words, when n is large, the distribution of the sample means will resemble a normal distribution if we continually pick independent, random samples of size n from any population.
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PLEASE HELP! Giving all my points
fill in all questions please
1:
The mean is 14.8
The median is 14 (11+17)/2=14
The mode is 10
2:
15, 21, 23, 26, 28, 30, 36, 38, 40, 43, 45, 49
3:
The mean is 91.6666666667
4:
The cost of the 5th child is $7850
IM SO SORRY IF I GOT ANY WRONG!!!!!!