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dimulka [17.4K]
3 years ago
11

Please help me. Will mark brainliest. A.S.A.P

Mathematics
1 answer:
Valentin [98]3 years ago
3 0

Answer:

D. 274

Step-by-step explanation:

A normal distribution of the scores is assumed. In the figure attached, the standard normal distribution table is shown.

If only top 5% of athletes are part of the team, then we need to find the value of the table which has a probability of 95%, that value is between 1.64 and 1.65, so we interpolate it as 1.645. The table was made for a variable with mean = 0 and standard deviation (sd) equal to 1, therefore to refer the result to our variable we compute:

1.645 = (x - mean)/sd

x = 1.645*sd + mean

x = 1.645*15 + 250 ≈ 274

So, 95% of the scores are below 274, then 274 is the minimum qualifying score

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Jesean buys a pizza for 20$ and 10 drinks. The drinks Cost the same amount. He spends 32$ on the pizza and the sodas together
ziro4ka [17]

Answer: See explanation

Step-by-step explanation:

Yiur question isn't complete but I believe that you want to know the price of the soda.

Let the price of the soda be represented by x.

Jesean buys a pizza for 20$ and 10 drinks. This will be: 20 + 10x

He spends 32$ on the pizza and the sodas together. This can be formed into an equation as:

20 + 10x = 32

10x = 32 - 20

10x = 12

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x = 1.2

Therefore, the soda cost $1.20 each

3 0
3 years ago
I will give brainliest for correct answer!
zavuch27 [327]

Answer:

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Step-by-step explanation:

7 0
3 years ago
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bagirrra123 [75]
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Answer:

Step-by-step explanation:

.

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