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3 years ago

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The length of a rectangular garden is 9 feet longer than its width. If the garden’s perimeter is 182 feet, what is the area of t

he garden in square feet? (please show all work)

1 answer:

Ivanshal [37]3 years ago

8 0

Answer:

1660.75 square feet

Step-by-step explanation.

Width=<em>x</em>

Length =<em>x</em>+9

(<em>(</em><em>x</em><em>)</em><em>+</em><em>(</em><em>x</em><em>+</em><em>9</em><em>)</em>)×2=182 feet

(2x+9)×2=182

18+4x=164

x=36.5

Width=36.5 feet

Length=45.5 feet

Area=36.5×45.5

=1660.75 square feet

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Answer:

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Given : Suppose a student's score on a standardize test to be a continuous random variable whose distribution follows the Normal curve.

(a) If the average test score is 510 with a standard deviation of 100 points.

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(b) What score puts someone in the 90th percentile?

90th percentile is such that,

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$P(Z< \frac{t-\mu}{\sigma})=0.90$

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