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svp [43]
3 years ago
5

Fernanda runs a large bowling league. She suspects that the league average score is greater than 150 per

Mathematics
1 answer:
murzikaleks [220]3 years ago
6 0

Answer:

1.20

Step-by-step explanation:

Let mean be represented by M and standard deviation by d. The score will be x and sample number of games be n

To get the test statistic, t for Fernanda's test, we use the formula

t=\frac {M-x}{\frac{s}{\sqrt n}}

Substituting 156 for mean, M then 150 for score x and 30 for standard deviation while 36 for n then

t=\frac {156-150}{\frac{30}{\sqrt 36}}

t=1.20 when put in two decimal place

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Anthony is 154 cm tall, his brother Gerry is 5/7 as tall as him. How tall is Gerry?
11111nata11111 [884]

The correct answer is 110 cm

Explanation:

Fractions always include two values (one at the top and the other at the bottom) and they represent the proportion of something, for example, 1/2 of an apple means there is only half apple. Now, to calculate how much is 5/7 of 154 centimeters, simply divide the total number into the denominator (bottom number) and then multiply the result by the numerator (top number). This process is shown in detail below:

\frac{5}{7}  -  5 is the numerator and 7 is the denominator

5/7 of 154 cm

154 cm / 7 = 22

22 x 5 = 110 cm

4 0
3 years ago
Julie has 300ml of juice, She gives of the juice away.<br> How much juice does she give away?
Aleks04 [339]

Answer: Up to 300 ml because that is all she has in total. I think the question is missing parts.

Step-by-step explanation:

5 0
3 years ago
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What is the area of angle ABC? Round to the nearest tenth
otez555 [7]
Area formula: L · W · H
Length: 0.5
Width: 5
Height: 5

Answer: 12.5²

(It's squared because 5√2 contains a square root.) 
5 0
3 years ago
For the function f(x)=<img src="https://tex.z-dn.net/?f=%5Cfrac%7B%5Csqrt%7Bx%7D%20%7D%7B5%7D%20%2B2" id="TexFormula1" title="\f
Ber [7]

Answer:

f^{-1}(x)=25(x-2)^2

Step-by-step explanation:

The inverse function can be found by solving ...

  f(y) = x

  (√y)/5 +2 = x

  (√y)/5 = x -2 . . . . . subtract 2

  √y = 5(x -2) . . . . . . multiply by 5

  y = 25(x -2)² . . . . . square both sides

The inverse function is ...

  f^{-1}(x)=25(x-2)^2

_____

<em>About the graph</em>

The inverse of a function is its mirror image across the line y = x.

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4 years ago
Need help asap...........
Vesna [10]
All there is, is a picture. Is there a question?
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3 years ago
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