mathematicssssssssssss bruhhhhhh
b. What is the probability that the mean price for a sample of 50 H&R Block retail customers is within $8 of the population mean?
The mean tax-return preparation fee H&R Block charged retail customers last year was $183 (The Wall Street Journal, March 7, 2012). Use this price as the population mean and assume the population standard deviation of preparation fees is $50.
Round your answers to four decimal places.
a. What is the probability that the mean price
for a sample of 30 H&R Block retail customers is within $8 of
the population mean?
b. What is the probability that the mean price
for a sample of 50 H&R Block retail customers is within $8 of
the population mean?
draw the following scenario using a vertical number line.
mary climbed up a ladder 24 feet to the second story of her house. she then climbed back down
Final answer:
To draw Mary's ascent and descent on a ladder, create a vertical number line from 0 to 24 feet to signify the height of the second story, then illustrate arrows for the ascent and descent.
Explanation:
To visualize Mary's movement on a ladder, we will draw a vertical number line. Let's assume the bottom of the ladder is at 0 feet. We will draw a number line up to 24 feet to represent the height Mary climbs to reach the second story of her house. Then, since Mary climbed back down, we would show her descent back to 0 feet. Here is how you can draw the scenario:
Start with a vertical line.Mark the bottom as 0 feet (this is where Mary starts and finishes).Mark a point at 24 feet (this is where the second story of her house is).Draw an arrow pointing up from 0 to 24 to represent Mary climbing up.Draw an arrow pointing down from 24 back to 0 to represent Mary climbing down.By following these steps, you will have a clear representation of Mary climbing up and down her ladder on a vertical number line.
The table shows the shipping costs for items of different values.
Which best describes the strength of the model?
a weak positive correlation
a strong positive correlation
a weak negative correlation
a strong negative correlation
Answer:
A strong positive correlation
Step-by-step explanation:
Since the dependent variable increases as the independent variable increases, this is a positive correlation.
Plotting these points, we can see that they form a nearly straight line. This makes it a strong correlation.
A strong positive correlation best describes the strength of the given model. So, option B is correct.
What is the correlation coefficient?The correlation coefficient is used to measure the strong relationship between the two variables.
The formula for the correlation coefficient
[tex]r= \frac{n(\sum xy)-(\sum x)(\sum y)} {\sqrt{ {[n\sum x^2-(x)^2] [n\sum y^2-(\sum y)^2]}}}[/tex]
We need to calculate the correlation coefficient and then make a conclusion about its value.
Form a table as shown where x is the cost of items and y is the shipping cost. The table becomes
x y XY x² y²
25 5.99 149.8 625 35.9
45 8.99 404.6 2025 80.8
50 8.99 449.5 2500 80.8
70 10.99 769.3 4900 120.8
190 34.96 1773.2 10050 318.3
The formula for the correlation coefficient
[tex]r= \frac{n(\sum xy)-(\sum x)(\sum y)} {\sqrt{ {[n\sum x^2-(x)^2] [n\sum y^2-(\sum y)^2]}}}[/tex]
where n=4
[tex]= \frac{ 4(1773.2)-(190)(34.96)} {\sqrt{{[4(10050)-190^2] [4(318.3)-34.96^2]}} }[/tex]
r[tex]=\frac{450}{4100\times51}[/tex]
r = 450 / √209100
r = 450/457.3
r = 0.98409
Thus, The value of r indicates a stronger positive correlation.
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Which graph models the equation -2x + 4y = -8?
Color count on facts
Our galaxy the Milky Way has a diameter of about 1•^10
luci cuts a board that is 3/4 yard long into pieces that are 3/8 yard long how many does she cut
Answer: She cuts 2 pieces
Step-by-step explanation:
Hi, to answer this question we have to analyze the information given:
Length of the board: 3/4 yard Length of the pieces: 3/8 yardSo, to calculate the number of pieces we have to divide the length of the board (3/4) by the length of each piece (3/8)
Mathematically speaking:
3/4 ÷ 3/8 = (3x8) /(4x3)=24/12= 2 pieces
Feel free to ask for more if needed or if you did not understand something.
Boxes that are 12 inches tall are being stacked next to boxes that are 18 inches tall. What is the shortest height at which the two stacks will be the same height
The two stacks will be the same height when stacked to a height of 6 inches.
Explanation:To find the shortest height at which two stacks of boxes, one measuring 12 inches tall and the other measuring 18 inches tall, will be the same height, we need to find the least common multiple (LCM) of the two heights. Since 12 and 18 are both divisible by 6, the LCM is 6 inches. Therefore, the two stacks will be the same height when stacked to a height of 6 inches.
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Use the interactive tool to graph the line given the following information:
coordinates (1,–3)
slope of –2
Based on your investigation, what is the value of b for the point (0,b)?
Answer:
B= -1
Step-by-step explanation:
How many times greater is the value 34.3 than the value 3.43? Explain your thinking
Josh's chicken soup recipe calls for 2 1\2 L of chicken stock. Josh makes 3 1\4 times the recipe for a family reunion. How much chicken stock does Josh use to make soup for the family reunion? Express your answer as a mixed number in the simplest form.
Answer:
[tex]8\frac{1}{8}[/tex] L
Step-by-step explanation:
A recipe of chicken soup calls for chicken stocks = [tex]2\frac{1}{2}[/tex] L
Josh makes [tex]3\frac{1}{4}[/tex] times the recipe
= [tex]3\frac{1}{4}[/tex] × [tex]2\frac{1}{2}[/tex]
= [tex]\frac{13}{4}[/tex] × [tex]\frac{5}{2}[/tex]
= [tex]\frac{65}{8}[/tex]
= [tex]8\frac{1}{8}[/tex]
Josh would use [tex]8\frac{1}{8}[/tex] L of chicken stocks.
Florida is 65,754.59 square miles what is the area of Florida rounded to the nearest tenth
The Area of Florida is 65,754.6
What is rounding a number to some specific place?Rounding some number to a specific value is making its value simpler (therefore losing accuracy), mostly done for better readability or accessibility.
Given that Florida is 65,754.59 square miles
rounding this nearest to tenth will be 65,754.6 square miles
Therefore, Area of Florida is 65,754.6 square miles
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One of your friends gives you $10 for a charity walkathon. Another friend gives you an amount per mile. After 5 miles, you have raised $13.50 total. Write an equation that represents the amount y of money you have raised after x miles.
The initial amount given is $10, this represents a constant
Now another friends is willing to give an amount which is not fixed, hence it is dependent on the amount if miles we walk
Let this variable amount be x
We have walks 5 miles in total
We have raid is 13.5 total amount
Therefore he expression to represent the total amount we have made is given as
10+5x= 13.50
Let us solve for x
subtract 10 from both sides we have
5x= 13.5-10
5x= 3.50
divide both sides by 5 we have
x = 3.5/5
x= 0.7
Hence our friend gives us $0.7 per mile
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write the equation for the transformation of the graph of y=f(x). use the form f(x)=a(x-h)+k. 13. translated 2 units left and 7 units down. 14. translated 5 units right, 2 units up, and stretched by a factor of 3.
The equations of the graph after respective transformations are;
13) f(x) = a(x + 2) - 7
14) f(x) = 3(x - 5) + 2
13) In transformations, when we translate a function to the left, it means we will add the number of units it is translated to the left to f(x).
Thus, if we translate 2 units to the left, then using the form f(x) = a(x - h) + k, we will have;
f(x) = a(x + 2) + k
This is because;
h = horizontal shift
k = the vertical shift
a = the factor of stretch.
Now, we are told that it is translated 7 units down.
Downward translation denotes subtraction. Thus, k = -7 and our final translated function is;
f(x) = a(x + 2) - 7
14) Using the same concept above;
Translation of 5 units to the left means h = -5
Also, translation of 2 units up means that k = +2
Stretching by a factor of 3 means that a = 3.
Thus, from the form; f(x) = a(x + h) + k, we have;
f(x) = 3(x - 5) + 2
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For a given input value q, the function f outputs a value r to satisfy the following equation. 11q-4=3r-6, Write a formula for f(q) in terms of q
Final answer:
To find the formula for f(q), solve the equation 11q-4=3r-6 for r. The steps include adding 6 to both sides and then dividing by 3, resulting in f(q) = (11q + 2) / 3.
Explanation:
To write a formula for f(q) in terms of q, we need to solve the equation 11q - 4 = 3r - 6 for r, the output of the function f. First, we add 6 to both sides to isolate the terms with r on the right side of the equation:
11q - 4 + 6 = 3r - 6 + 6
11q + 2 = 3r
Next, we divide both sides by 3 to solve for r:
(11q + 2) / 3 = 3r / 3
(11q + 2) / 3 = r
Therefore, the formula for f(q) is:
f(q) = (11q + 2) / 3
describe the transformation of the parent function f(x)=x^2 to 1/2 (x+1)^2-5
Evaluate the expression when y = 4. 5 + y + 8 A. 72 B. 21 C. 17 D. 13
Answer: its c
Step-by-step explanation:
5+4=9 9+8=17
If one-third of a number is greater than five less than twice the number, which of the following is true? x < 3, x > -3, x > -3/5, x < 3/5
Answer: The correct option is
(A) x < 3.
Step-by-step explanation: Given that one-third of a number is greater than five less than twice the number.
We are to select the inequality that is TRUE.
Let the required number be represented by x.
Then, according to the given information,we have
[tex]\dfrac{1}{3}x>2x-5\\\\\\\Rightarrow x>3(2x-5)\\\\\Rightarrow x>6x-15\\\\\Rightarrow x-6x>-15\\\\\Rightarrow -5x>-15\\\\\Rightarrow 5x<15~~~~~~~~~~[\textup{since }-a>-b~~~\Rightarrow a<b]\\\\\Rightarrow x<\dfrac{15}{5}\\\\\Rightarrow x<3.[/tex]
Thus, the true statement is x < 3.
Option (A) is CORRECT.
Do the fractions 6/7 and 16/25 convert to repeating or terminating decimal numbers
Answer:
reapeating and terminating
Step-by-step explanation:
how to solve it along with answer please
what is 0.279 times 53
Final answer:
To calculate 0.279 times 53, multiply 279 by 53 and then place the decimal point three places from the right of the product, resulting in 14.787. If rounding to two decimal places, the answer is 14.79.
Explanation:
To find the product of 0.279 times 53, we can follow the usual multiplication process. We multiply as if there were no decimal places, and then we count the total number of decimal places in both numbers to place the decimal in the correct position in the final answer.
0.279 has three decimal places, and 53 has none. After you multiply 279 by 53, count three places from the right of the resulting number to place the decimal point. So, if 279 times 53 equals 14787, then 0.279 times 53 equals 14.787.
Applying the rules of rounding, if we wanted to round the result to two decimal places we would get 14.79 since the third decimal place is a 7 which rounds up the second decimal place from 8 to 9.
Find a degree 3 polynomial having zeros -8, 1 and 8 and the coefficient of x^3 equal 1
24 divided by 689 show work
The graph below shows the price of different numbers of hats at a store:
A graph is shown. The values on the x-axis are 0, 2, 4, 6, 8, 10. The values on the y-axis are 0, 13, 26, 39, 52, and 65. Points are shown on ordered pairs 0, 0 and 2, 13 and 4, 26 and 6, 39 and 8, 52. These points are connected by a line. The label on the x-axis is Number of Hats. The title on the y-axis is Price in dollars.
Which equation can be used to determine p, the cost of h hats? (1 point)
h = 6.50p
p = 13h
p = 6.50h
h = 13p
p=6.50h yeah ur welcome
What system of linear inequalities is shown on the graph?
Answer:
[tex]3y-x<6[/tex]
[tex]2x+y\leq2[/tex]
Step-by-step explanation:
Equation of line that passes two points (a,b) and (c,d) :
[tex](y-b)=\dfrac{d-b}{c-a}(x-a)[/tex]
Dotted line passes through (0,2) and (-3,1).
Equation of Dotted line :
[tex](y-2)=\dfrac{1-2}{-3-0}(x-0)[/tex]
[tex](y-2)=\dfrac{-1}{-3}x[/tex]
[tex]3(y-2)=x[/tex]
[tex]3y-6=x[/tex]
[tex]3y-x=6[/tex]
Inequality for dotted line (values on line is not included for dotted)
[tex]3y-x<6[/tex] (shaded below )
Solid line passes through (0,2) and (1,0)
[tex](y-2)=\dfrac{0-2}{1-0}(x-0)[/tex]
[tex]y-2=-2x[/tex]
[tex]2x+y=2[/tex]
Inequality for dotted line (values on line is included for solid line)
[tex]2x+y\leq2[/tex] (shaded leftwards )
∴ System of linear inequalities is shown on the graph:
[tex]3y-x<6[/tex]
[tex]2x+y\leq2[/tex]
Determine the correct scientific notation form of the number. 3,708,000,000\
A)
3.708 x 106
B)
3.708 x 109
C)
37.08 x 106
D)
37.08 x 108
The scientific notation of the given number is 3.708 × [tex]10^9[/tex]. Therefore, option B is the correct answer.
The given number is 3,708,000,000.
What is scientific notation?Scientific notation is a way of writing very large or very small numbers. A number is written in scientific notation when a number between 1 and 10 is multiplied by a power of 10.
If the given number is multiples of 10 then the decimal point has to move to the left, and the power of 10 will be positive.
Now, 3,708,000,000 can be written in scientific notation as 3.708 × [tex]10^9[/tex].
The scientific notation of the given number is 3.708 × [tex]10^9[/tex]. Therefore, option B is the correct answer.
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The Temperature in Indianapolis was -4°F at 7 AM the temperature rose 3°F by noon what was the temperature at noon use a number line to find the answer
The dimension of a community garden are such that the length is 7 feet shorter than 5 times the width. Which equation models the area, in square feet, of the community garden in terms of its width, w?
a. A=w(5w-7)
b. A=w(7w-5)
c. A=5w(w-7)
d. A=7w(w-5)
Lorraine writes the equation shown.
x² + y - 15 = 0
She wants to describe the equation using the term relation and the term function.
The equation represents,
A relation and a function
A relation but not function
A function but not a relation
Neither a relation nor a function