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I am Lyosha [343]
3 years ago
7

What is the value this is -3 standard deviations from the mean?

Mathematics
1 answer:
aev [14]3 years ago
6 0

Answer:

x = 44.9

Step-by-step explanation:

This equation shown falls in the formula for z score:

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

Where \mu = 62

\sigma = 5.7

ans z = -3

So, which value corresponds to a z-score of -3???

we cross multiply and do algebra to solve for x:

-3=\frac{x-62}{5.7}\\-3*5.7=x-62\\-17.1=x-62\\-17.1+62=x\\44.9=x

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For this parabola we have:
f ( 0 ) = 8
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f ( 0 ) = - 16 * ( 0 - 1 )² + 24 = - 16 * 1 + 24 = 8 ( correct )
f ( 1 ) = - 16 * ( 1 - 1 )² + 24 = 24  ( correct )
For B:
f ( 0 ) = - 16 * ( 0 + 1 )² + 24 = - 16 + 24    = 8  ( correct )
f ( 1 ) = - 16 * ( 1 + 1 )² + 24 = - 16 * 4 + 24 = - 64 + 24 = 40 ( false )
For C:
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A )  f ( t ) =  - 16 * ( t - 1 )² + 24
   

6 0
3 years ago
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a rectangular garden is 47 ft longer than it is wide. its perimeter is 314 ft. what is the equation to describe the width and le
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3 0
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