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Readme [11.4K]
3 years ago
15

At the beginning of the school year, each student's height was measured Ryans's height was measured 48.2 inches his friend Sara

was 2.05 inches shorter than their friend Joel had measured 3 inches taller than Sara. what were the heights of Sara and Joel?
FIRST 3 PEOPLE WHO ANSWER GETS BRAINLESS........
Mathematics
1 answer:
kirill115 [55]3 years ago
4 0

Answer:

Step-by-step explanation:

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The aspect ratio is used when calculating the aerodynamic efficiency of the wing of a plane. For a standard wing area,
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Answer: A

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The waking time of a student under common conditions is normally distributed with mean of 30 hours and a standard deviation of 5
Elina [12.6K]

Answer:

If the walking time is greater than or equal to 38.225 hours, than it exceeds 95% probability that is lie in top 5%.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 30 hours

Standard Deviation, σ = 5 hours

We are given that the distribution of waking time is a bell shaped distribution that is a normal distribution.

Formula:

z_{score} = \displaystyle\frac{x-\mu}{\sigma}

We have to find the value of x such that the probability is 0.95

P( X < x) = P( z < \displaystyle\frac{x - 30}{5})=0.95  

Calculation the value from standard normal z table, we have,  

\displaystyle\frac{x - 30}{5} = 1.645\\\\x = 38.225  

Thus, if the walking time is greater than or equal to 38.225 hours, than it exceeds 95% probability that is lie in top 5%.

4 0
3 years ago
-286 divided by 457.6 what is the quotient?
kompoz [17]
The quotient is -0.625
3 0
3 years ago
What is the value of 5^4 over 5^6
Tasya [4]
5^4
------
5^6
625
-----
15,625
625/15625=25

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3 years ago
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