Answer:
[tex] \binom{?}{?} [/tex]
Step-by-step explanation:
$40 Pam use type diagram
$45. bro
Can someone please look in the photo and explain? Thanks so much I appreciate the help.
Answer:
25.12
Step-by-step explanation:
C = [tex]\pi[/tex]d The d is the diameter. This is the distance across the ha that goes through the middle of the circle.
C 3.14(8) The c stands for the circumference or the distance around the circle. We generally use 3.14 for [tex]\pi[/tex]
C= 25.12
If 20 g of pure drug are added to a container of sterile water, and the total volume of this solution is 50 mL, what would be the strength of this solution expressed as a ratio and as a percent?
The strength of the solution is 2:5 g/ml expressed as a ratio and the strength expressed as percent is 20%
Total amount of drug = 20 gm
Total volume of solution = 50ml
Strength (as ratio)
= 20/50 g/mL
= 0.4 g /mL
Amount of drug = M = 20 g
Volume of solution = V = 50 mL
Concentration or strength (ratio) = M/V = 0.4 g/mL
Concentration or strength (percent)
= M/V × 100
=20/50 × 100%
= 40%
The concentration is 40% expressed as a percentage.
Solution concentration is the perfect measurement of how much of the solute has been dissolved in a particular amount of solvent or solution.
A solution that contains a large amount of the dissolved solute is said to be highly concentrated. A solution that contains only a small quantity of dissolved solute is said to be diluted.
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Need help with question
The required derivative of the given function g(z) = ln√(16- z² / 16+z²) is
[tex]g'(z) =-\dfrac{32z}{\left(z^2+16\right)\left(-z^2+16\right)}[/tex]
What is the chain rule in differentiation?The outside-inside rule, the composite function rule, and the function of a function rule are all synonyms for this chain rule in differentiation. It is exclusively used to calculate the derivatives of composite functions.
The chain rule formula as shown below
d/dx ( f(g(x) ) = f' (g(x)) · g' (x)
The function is given in the question
g(z) = ln√(16- z² / 16+z²)
We have to differentiate g(z) = ln√(16- z² / 16+z²)
Differentiation with respect to z in the given function,
[tex]\frac{d}{dz}\left(\ln \left(\sqrt{\left(\left(\frac{16-z^2}{16+z^2}\right)\right)}\right)\right)[/tex]
We have to apply the chain rule of differentiation for finding derivatives,
[tex]\dfrac{1}{\sqrt{\dfrac{16-z^2}{16+z^2}}}\dfrac{d}{dz}\left(\sqrt{\dfrac{16-z^2}{16+z^2}}\right)[/tex]
[tex]-\dfrac{32z}{\left(z^2+16\right)\left(-z^2+16\right)}[/tex]
Therefore, the required derivative of the given function g(z) = ln√(16- z² / 16+z²) is
[tex]g'(z) =-\dfrac{32z}{\left(z^2+16\right)\left(-z^2+16\right)}[/tex]
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The distance from -8 to 0 is the same as the distance from 8 to 0 on the number line
The distance from -8 to 0 is the same as the distance from 8 to 0 on the number line which is 8 units.
According to the question,
We have the following information:
The distance from -8 to 0 is the same as the distance from 8 to 0 on the number line.
We know that the distance can not be negative in any case even when the points given are negative.
So, when we find the distance from -8 to 0, then we have the distance as 8 units.
Now, when we find the distance from 8 to 0, then we have the distance as 8 units.
Hence, the distance from -8 to 0 is the same as the distance from 8 to 0 on the number line which is 8 units.
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solve 5x+y=24x+y=4 use the linear combination method
Answer:
(x,y)=(0,4)
Step-by-step explanation:
write as systems as equations, multiply both sides of the equation by -1, sum the equations vertically to eliminate at least one variable, divide both sides of the equation by -19, substitute the given value of x into the equation 5x+y=4, The possible solution of the system is the ordered pairs (x,y) =(0,4), then you're done. whew. ;)
The top of an Iceberg is 67 ft above sea level, while the bottom is 283 ft below sea level. What is the distance between the top and the bottom
of the Iceberg?
The distance between the top and the bottom of the iceberg is 417 feet.
What is an expression?An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.
Example: 2 + 3x + 4y = 7 is an expression.
We have,
The top of an Iceberg is 67 ft above sea level, while the bottom is 283 ft below sea level.
We can draw as,
Top of an iceberg
|
|
| (67 feet)
|
Sea level
|
| (283 feet)
|
|
Bottom of the iceberg
The distance above the sea level = 67 feet
The distance below the sea level = -283 feet
( negative sign due to below-sea level
Now,
The distance between the top and the bottom of the iceberg.
= 67 - (-283)
= 67 + 283
= 417 feet
Thus,
The distance between the top and the bottom of the iceberg is 417 feet.
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n is an odd number.
Which statements are true?
You must get them all correct to get any marks.
A: n²+2 is odd
B: n(n + 1) is odd
D: n² + 1 is odd
E: n(n + 2) is odd F: (n + 2)² is odd
C: (n+1)² is odd
The following statements are marked true or false accordingly
A: n²+2 is odd true
B: n(n + 1) is odd false
C: (n+1)² is odd false
D: n² + 1 is odd false
E: n(n + 2) is odd true
F: (n + 2)² is odd true
How to show the statementsExamples are used to support or counter the statements
A: n²+2 is odd
3^2 + 2
= 9 + 2
= 11 (true)
B: n(n + 1) is odd
= 5(5+1)
= 5 * 6
= 30 (false)
C: (n+1)² is odd
= (7 + 1)^2
= 64 (false)
D: n² + 1 is odd
= 9^2 + 1
= 81 + 1
= 82 (false)
E: n(n + 2) is odd
= 3 ( 3 + 2)
= 3 (5)
= 15 (true)
F: (n + 2)² is odd
= (13 + 2)²
= 225 (true)
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Critique Reasoning An office manager has $10,000 to spend on new equipment. He planned to purchase 300 lamps for $72 each. He completed the calculations at the right and concluded that there would be plenty of money left to buy additional equipment. 4. What does the office manager do to support his thinking?
The probability that the sum of the two die rolls is 9 is 4 / 11.
What is the probability?Probability determines the chances that a random event would happen. The probability the event occurs is 1 and the probability that the event does not occur is 0.
Probability that the sum of the two die roll is 9 = number of sides that roll a sum of 9 / total number of sides that at least one of them is a 5
number of sides that roll a sum of 9 =(4,5) (6 , 3), (3 , 6), ( ,4) = 4
total number of sides that at least one of them is a 5 = (1, 5), (2, 5), (3, 5), (4, 5) , (5, 5), (6, 5), (5, 1), (5, 2) , (5, 3), (5, 4), (5, 6) = 11
Probability that the sum of the two die roll is 9 = 4/11
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The office manager will either put up a clearer calculation and model the equation to ascertain money remaining at each quaintly bought or a graph to present his calculations
What is a graph ?A graph is a representation of data, it helps to analyze data clearly with lesser time
The calculation the office manager will do is to multiply the number of lamps with the unit price then subtract from the amount set aside to spend on new equipment
The calculation
let the money left be z
10000 = 300 * 72 + z
10000 = 21600 + z
subtraction
z = 10 000 - 21600
z = - 16000
The calculation shows that the money will not be enough
The equation is modeled as
y = 10000 - 300x
where x is the number of bulbs
y is amount left
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Figure ABCD is reflected across the x-axis.
What are the coordinates of
of A'B'C', and D'₂
Enter your answer by filling in the boxes.
A'Go
B'GD
C'OD
D'OD
Answer: The required vertices after reflection are A'(2, -3), B'(5, -5), C'(7, -3) and D'(5, -2).
Step-by-step explanation: Given that the figure ABCD is reflected across the X-axis.
We are to find the co-ordinates of A, B, C and D after reflection.
From the figure, we note that the co-ordinates of the vertices of ABCD are
A(2, 3), B(5, 5), C(7, 3) and D(5, 2).
After reflection from X-axis, the y co-ordinate of each vertex will change its sign (y → -y).
Therefore, the vertices of ABCD after reflection are
A(2, 3) ⇒ A'(2, -3),
B(5, 5) ⇒ B'(5, -5),
C(7, 3) ⇒ C'(7, -3),
D(5, 2) ⇒ D'(5, -2).
Thus, the required vertices after reflection are A'(2, -3), B'(5, -5), C'(7, -3) and D'(5, -2).
6. You built a driveway ½ mile long to your new
house. You have an 8-foot-wide road ditch on
both sides of the road.
a. What is the total length of the road ditch?
(in ft)
b. What is the measurement in square feet of
the road ditch?
The total length of the road ditch is 1/2 mile and the measurement in square feet of the road ditch is 42,240 square feet.
According to the question,
We have the following information:
You built a driveway ½ mile long to your new house. You have an 8-foot-wide road ditch on both sides of the road.
a) Now, the length of the ditch will be equal to the length of the driveway.
Length of ditch = 1/2 mile
b) Measurement of the road ditch in square feet:
Area of rectangle = length*width
Converting length into feet:
1 mile = 5280 feet
1/2 mile= 2640 feet
Area of ditch =(2640)*8
Area of ditch =21,120 square feet
Now, ditch is on both sides:
So, total area of ditch = 2*21,120
Total area of ditch = 42,240 square feet
Hence, the total length of the road ditch is 1/2 mile and the measurement in square feet of the road ditch is 42,240 square feet.
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Find the (a) mean, (b) median, (c) mode, and (d) midrange for the data and then (e) answer the given question.
Listed below are the jersey numbers of 11 players randomly selected from the roster of a championship sports team. What do the results tell us?
70 54 46 85 61 81 45 6 35 39 3
The mean is 47.73.
The median is 46.
The dataset has no mode.
The midrange is 44.
What is the mean, mode, median and midrange?
Mean is the average of a set of numbers. It is determined by adding the numbers together and dividing it by the total number
Mean = sum of the numbers / total number
Mean = (70 + 54 + 46 + 85 + 61 + 81 + 45 + 6 + 35+ 39 + 3) / 11
= 525 /11 = 47.73
Median is a measure of central tendency that is used to determine the number that is at the center of a set of values when the numbers are arranged in either ascending or descending order.
3, 6, 35, 39, 45, 46, 54, 61, 70, 81, 85
The median is 46.
Mode is the most frequent number in a dataset. The jersey numbers only occur once. Thus, there is no mode.
Midrange is the average of the maximum and minimum values of the dataset.
Midrange = (maximum value + minimum value) / 2
Midrange = (3 + 85) / 2
Midrange = 88 / 2
Midrange = 44
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kaitlin deposited $4000 into an account with 5.2% interest,compounded annually. assuming that no withdrawals are made,how much will she have in the account after 3 years?
Kaitlin will have $4657 as the total amount in her account after 3 years which was found using the compound interest formula.
What exactly is Compound Interest?
The interest earned on savings that is computed using both the original principle and the interest accrued over time is known as compound interest. The compound interest formula is calculated as: A = P (1+r)^tGiven: Kaitlin put $4000 into an account earning 5.2% annual compound interest.
We need to find how much will she have in the account after 3 years.
Let,
P = initial sum of money
r = interest rate,
t = number of years in decimal form
A = total amount in her account
Using the compound interest formula we obtain,
A = P (1+r)^t
A = 4000(1 + 0.052)³
A = 4000(1.052)³
A = 4000(1.164)
A = $4657
Therefore, Kaitlin will have $4657 as the total amount in her account after 3 years.
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help please, the question in the picture
The probability of either A or B is 0.48 and the probability neither A nor B would be 0.52
What is Probability?Probability defines the likelihood of occurrence of an event. There are many real-life situations in which we may have to predict the outcome of an event. We may be sure or not sure of the results of an event
probability A will occur pr(A) = 0.39, probability A will not occur pr(A') = 1 - 0.39 = 0.61,
Probability B will occur pr(B) = 0.42, probability B will not occur, pr(B') = 1 - 0.42 = 0.58
For mutually exclusive events if A will occur it means that B will not occur
So, probability either A or B is
= pr(A) x pr(B') + pr(B) x Pr(A')
= 0.39 x 0.58 + 0.42 x 0.61
= 0.4824 and to 2 decimal places the answer becomes 0.48
The probability neither A nor B is equal to 1 - 0.48 = 0.52
In conclusion the probability Either A or B will occur is 0.48 and the probability neither A nor B is 0.52
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Find the area of the given figure
Answer:
you multiply the numbers to find the area so W*H with times hight so the answer would be 6,250
WHAT IS THE NAME OF THIS FORMULA????
Answer:
Estimation and Confidence Intervals
Step-by-step explanation:
Just found it on a math website basically.
Consider the graph of a function that is negative over its entire domain. Can the graph have an X-intercept? Explain
A function that is negative over its entire domain can be having its values of x and y negative i.e. it can be (-3,-4). Yes, the graph has an X-intercept.
A line's x-intercept and y-intercept are the points at which the x- and y-axes, respectively, are crossed. We find it easier to graph linear equations when we consider intercepts.
X-intercept illustration:
Where a line on a graph crosses the x-axis is known as the x-intercept. At that time, the y coordinate's value is zero. For instance, the x-intercept would be where the equation y = x + 5 crosses the x-axis at the location (-5, 0).
Calculate the x-intercept:
We set y = 0 and solve the equation for x to determine the x-intercept. This is due to the fact that the line crosses the x-axis at y=0. If an equation is not in the form y = mx + b, we can still solve for the intercepts by substituting 0 where necessary and then solving for the final variable.
An illustration of y-intercept:
This is an illustration of a y-intercept. Think about the line y = x + 3. The point where this graph crosses the y-axis is (0,3). Therefore, the y-intercept of the line y = x+ 3 is (0,3).
If we can locate the x-intercept of a linear function, finding the zero should be simple. The x-coordinate of the x-intercept is zero.
The x-intercept can be positive or negative.
Summary:
The location on the graph where our line crosses the x-axis is known as the x-intercept.
Positive numbers are to the right of the origin and negative numbers are to the left of the origin on the x-axis.
The location on the graph where our line crosses the y-axis is known as the y-intercept.
The side of a graph is negative:
Consider the numbers as being on the x-axis to help us remember this. The positive values are located to the right of the origin, and the negative values are located to the left of the origin.
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Another equation question?
The equation to represent the total number of students taking the yoga classes is s = 13c.
What is an equation?An equation is the statement that illustrates that the variables given. In this case, two or more components are taken into consideration to describe the scenario.
Let the number of students = s
Let the number of classes = c
Therefore the total students will be:
s = 13 × c
s = 13c
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4. A local video store has seen good linear growth in rentals since 2005. In 2009, the store had
23,500 rentals. In 2015, the store had 28,540 rentals.
a. Find the average rate of change of the store's rentals in rentals per year.
b. Using the average rate of change, determine the number of rentals in 2005.
The average rate of change of the store's rentals in rentals per year is 840 rentals per year and the number of rentals in 2005 is 20,140.
According to the question,
We have the following information:
A local video store has seen good linear growth in rentals since 2005. In 2009, the store had 23,500 rentals. In 2015, the store had 28,540 rentals.
a) Average rate of change of store's rentals =(Rentals in 2015-rentals in 2009)/Number of years
Now, the number of years passed between 2009 and 2015 is 6 years.
So, we have:
Average rate of change = (28540-23500)/6
Average rate of change = 5040/6
Average rate of change = 840 rentals per year
b) Now, the number of rentals in 2005:
(Number of rentals in 2009-number of rentals in 2005)/4 = 840
Let's take the number of rentals in 2005 to be x.
(23500-x)/4 = 840
23500-x = 3360
-x = 3360-23500
-x = -20140
x = 20,140
Hence, the average rate of change of the store's rentals in rentals per year is 840 rentals per year and the number of rentals in 2005 is 20,140.
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Bianka makes an error when she tries to write an expression equivalent to 12+15×3 minus Y -10 Y what is the error
The error that Bianka made in the algebraic expression is that; when 15 was distributed it should be '45 - 15y' rather than '45 + 15y'
How to simplify algebraic expressions?An algebraic expression is defined as an expression that is made up of variables and constants, as well as algebraic operations such as multiplication, addition, division, subtraction, etc.
Now, the steps that Bianka took to solve the algebraic expression are;
12 + 15(3 - y) - 10y
12 + 45 + 15y - 10y
57 + 5y
Now, the first step according to the rule PEMDAS is to expand the bracket and when positive and negative are multiplied, the sign is negative and as such step 2 should have been 12 + 45 - 15y - 10y.
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I need help with this please help me
Answer:
Step-by-step explanation:
Hi, Danna, these are tough to figure out...
so, first check to see if the 3 known angles add up to 180°, they don't I checked, so, it tells us that the one angle 96° up at the top, does not include ∠2 , which is good, b/c we now know 2 of the angles in that inner triangle.. and we know that a triangle adds up to 180° , so just find that last angle... the one opposite to ∠1 .... nice, if we get the ∠1' angle we can then also figure out ∠1
180-96-30=54
∠1' =54°
so ∠1= 180-54 =126°
we now know ∠1
use that , and that the next smaller triangle also adds up to 180
to find ∠2
∠2= 180-28-126=26°
∠1=126°
∠2 = 26°
:) it's tough to think all of that through. don't worry. just keep working these , they will get easier.
The distance covered by a car traveling at a constant speed is directly proportional to the
time spent traveling. If the car goes 75 miles in 2.5 hours, how far will it go in 7 hours?
Answer:75/5 = x/7
Step-by-step explanation:
Complete this equation and you will end up with the answer 105
Kristen's Blossoms sells roses in groups of 8. Across town, Hector's Blooms sells roses in groups of 12. If a customer wants to buy the same number of roses from both vendors, what is the smallest number of roses the customer will have to buy from each vendor?
The smallest number of roses the customer will have to buy from each vendor is 24.
What is a multiple?It should be noted that the multiple simply means the product of a number.
In this case, Kristen's Blossoms sells roses in groups of 8 and across town, Hector's Blooms sells roses in groups of 12.
The multiples of 8 = 8, 16, 24, 32 ....
The multiples of 12 = 12, 24, 36...
Therefore, the least number of roses is 24.
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Find all points of intersection of the graphs of the polynomials. f(x)=(x+5)(x-5) and g(x)=(x+1)(x-3)
Answer:
1 intersection point at (11,96)
Step-by-step explanation:
Comment
The best way to solve this is to start with a graph. Then you can work out the actual intersection points.
The graph shows that there is only 1 intersect point. Let's try and find it.
Givens
y = (x - 5)(x + 5) = x^2 - 25
y = (x +1)(x - 3) = x^2 -2x - 3
If the intersect points are what you want, then the y value for both equations must be equal.
Solution
x^2 - 25 = x^2 - 2x - 3 Subtract x^2 from both sides
x^2 - x^2 - 25 = x^2 - 2x - 3 Combine
- 25 = - 2x - 3 Add 3 to both sides
-25+3 = -2x - 3 + 3 Combine
-22 = - 2x Divide by - 2
-22/-2 = x
x = 11
y = x^2 - 25
y = 11^2 - 25
y = 121 - 25
y = 96
Benjamin went shopping for a new phone because of a sale. The price on the tag was $28, but Benjamin paid $15.40 before tax. Find the percent discount.
if price on the tag was $28, but Benjamin paid $15.40 before tax then the percent of discount is 45%.
What is Percentage?percentage, a relative value indicating hundredth parts of any quantity.
Given that Benjamin went shopping for a new phone because of a sale. The price on the tag was $28, but Benjamin paid $15.40 before tax
We need to find the percent discount that Benjamin received
Compare the difference between the original price and the discounted price to the original price, and then express that difference as a percentage of the original price.
We can use the following formula:
Percent Discount = (Original Price - Discounted Price) / Original Price × 100%
=28-15.4/28 × 100
=0.45×100
=45%
Hence, Benjamin received a discount of 45%
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Complete the number sentence:
-show your work-
-7 -6=?
?-(-6)=1
32-33=?
12-?=21
Josie is a student in a fifth-grade inclusion class. She has a specific learning disability in mathematics and has difficulty solving word problems. As soon as she finishes reading a problem, she begins doing computations; additionally, she seems to think that all problems have whole-number answers. One of the annual goals in her IEP is related to learning the process of solving word problems: "Josie will be able to solve grade-appropriate word problems independently 85 percent of the time, using a systematic and logical process.
Answer:
Step-by-step explanation:
Solving word problems is always hard. even w/o any learning challenges. I'm kind of good at word problems but what I notice is that people have ways to ask word problem questions that can be very much about their own thought process, not really about the math. Often it matters who is asking the word problem more than what the question is about for understanding the problem. I don't think Josie will stand a chance with some peoples questions, like she'll solve it .01% of the time. Not 85% of the time. Just my perspective. :)
Amanda is on a swim team. Each day she swims 800 meters. How much is this in kilometers if 1 kilometers be is equal to 1000 meters
Find the discriminant of -18p=p^2+81
Step-by-step explanation:
[tex] \sf - 18p = p^2+81 [/tex]
Moving all the expression to the Left side of the equation,
[tex] \sf -18p + p^2 - 81 = 0 [/tex]
To find the discriminant of the above equation we can simply use the Quadratic formula.
The discriminant formula of a quadratic equation[tex] \sf ax^2 + bx + c = 0 \: is \: (d = b^2 - 4ac )[/tex]
Where d represents the discriminant
a, b and c are the coefficient of the above equation,
p^2, here coefficient of p² is a = 1
-18p, here coefficient of p is b = -18
81, here the number is constant so coefficient is c = 81.
So simply by substituting the value of a, b and c in the above discriminant formula we get,
[tex] \sf d = b^2 - 4ac [/tex]
[tex] \sf d = (-18)^2 - (4 \times 1 \times 81) [/tex]
[tex] \sf d = 324 - 324[/tex]
[tex] \sf d = 0 [/tex]
Therefore, The discriminant of 18p = p² + 81 is 0.
Answer:
0 (zero)
Step-by-step explanation:
To find the discriminant of the quadratic equation -18p = p² + 81, we first need to rewrite the equation in standard form, which is of the form ax² + bx + c = 0.
[tex]\begin{aligned}-18p&=p^2+81\\p^2+81&=-18p\\p^2+81+18p&=-18p+18p\\p^2 + 18p + 81 &= 0\end{aligned}[/tex]
Compare the coefficients of the rewritten quadratic equation with the standard form:
a = 1b = 18c = 81The discriminant of a quadratic equation in the form ax² + bx + c = 0 is given by the formula:
[tex]\boxed{\textsf{Discriminant} = b^2 - 4ac}[/tex]
Substitute the values of a, b, and c into the formula:
[tex]\begin{aligned}\textsf{Discriminant} &= (18)^2 - 4(1)(81)\\&=324-4(81)\\&=324-324\\&=0\end{aligned}[/tex]
Therefore, the discriminant of the given quadratic equation is zero.
In hypothesis testing,the assumption(s) for the Z test for a Mean when the σ is known The sample is a random sample Either n > or = 25 or the population is normally distributed if n < 25 both a) and b) none of the above
In hypothesis testing, the assumption for the Ztest for a mean when the σ is known then n > 30. Hence the answer is : None of the above
What is hypothesis?Using sample data, hypothesis testing is used to assess the plausibility of a hypothesis. Given the data, the test provides evidence for the hypothesis's plausibility.
Statistical analysts put a hypothesis to the test by measuring and examining a random sample of the population under consideration. Because the distributions of small samples are not normal, a t-test is required. If the sample size is large (n> 30), statistical theory predicts that the sample mean is normally distributed and that a z test for a single mean can be used.
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-3/2t+1/3=2/4
Answer??
Answer:
t = 1/9
Step-by-step explanation:
Combine multiplied terms into a single fraction
-3/2 (t) + 1/3 = 2/4
3t/2+ 1/3 = 2/4
Find common denominator
3 x 3t/6 + 2/6 = 2/4
Combine fractions with common denominator
3 x 3t/6 + 2/6 = 2/4
3x3t + 2
/ 6= 2/4
Multiply the numbers
9t+2
/6 = 2/4
Divide the numbers
9t+2 divided by 6 is 1/2
Multiply all terms by the same value to eliminate fraction denominators
6 x 9t+2 divided by 6 = 6 x 1/2
Cancel multiplied terms that are in the denominator
9t+2=3
Subtract 2 from both sides
9t+2-2=3-2
Simplify
9t=1
Divide both sides by the same factor
9t/9+=1/9
Simplify
t= 1/9