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Greeley [361]
3 years ago
13

The average test scores for a particular test in algebra was 84 with a standard deviation of 5. What percentage of the students

scored higher than 89%? Please explain your answer.
Mathematics
1 answer:
Delicious77 [7]3 years ago
8 0

Answer:

The percentage of the students scored higher than 89% is 15.87%

Step-by-step explanation:

we are given

The average test scores for a particular test in algebra was 84

so, mean is 84

\mu=84

a standard deviation of 5

so,

\sigma=5

we have

x=89

now, we can use z-score formula

z=\frac{x-\mu}{\sigma}

now, we can plug values

z=\frac{89-84}{5}

z=1

now, we can use calculator

and we get

p(z>1)=0.1587

So,

The percentage of the students scored higher than 89% is 15.87%

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3 0
3 years ago
The graph below represents the function f(x) and the translated function g(x) .
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Explanation:

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Put another way: the old input x is updated to the new input x-b which is smaller by b units. This helps explain why the xy axis is shifted to the left this amount.

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6 0
3 years ago
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Answer:

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Step-by-step explanation:

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4 0
3 years ago
I need help with my<br> math
Zinaida [17]

Answer:

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b: 6

y-coordinate when x = 0: -2

Step-by-step explanation:

To find the slope, you need to divide the change in the y values between two points on a line by their change in x values. The two complete points given are (6, 10) and (2, 2), so doing this for them would be...

(10-2)/(6-2) = 8/4 = 2, so your slope is 2

To find a, you must use this slope by counting from one of the points. For every one you go to the right, you go up two. So, how many times do you need to go up 2 (slope), from 2 (starting point's y coordinate), to get to 8 (target point's y coordinate)? (8-2)/2 = 6/2 = 3, so 3 times. Add that to 2 (starting point's x coordinate) to get 5, so a is 5.

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8 0
3 years ago
How do you solve -3+r/3=-5
MAVERICK [17]

Answer:

r=-6

Step-by-step explanation:

Question: -3+r/3=-5

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Footnotes:

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7 0
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