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3 years ago

5

Mrs. Sung gave a test in her trignonmetry class. The scores were normally distributed with a mean of 85 and a standard deviation

of 3.
What percent would you expect to score between 88 and 91? Round answer to the nearest tenth.

1 answer:

lisov135 [29]2 years ago

5 0

Answer and explanation:

67% as it's +/- one standard deviation from the mean

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Solve the system of equations -x-2y=0 and -x+y=6 by combining the equations

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Answer:

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Step-by-step explanation:

Use the second equation to make y=x+6

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<u>Given</u>:

A cylindrical tank has a height of 10 feet.

The radius of the cylindrical tank is 4 feet.

Jane fills the tank with water at a rate of 8 cubic feet per minute.

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<u>Volume of the cylinder:</u>

The volume of the cylinder can be determined using the formula,

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Substituting the values, we have;

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The time taken can be determined using the formula,

$Time = \frac{Volume}{Rate \ of\ filling}$

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$Time = \frac{502.4}{8}$

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