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3 years ago

Find the area of the figure. Round to the nearest tenth if necessary.

Mathematics

1 answer:

rosijanka [135]3 years ago

5 0

Answer:

63 sq ft

Step-by-step explanation:

The formula for the area of a trapezoid is

A = h(a + b)/2 where a and b are the lengths of the parallel sides and h is the distance between them

A = 7(11 + 7)/2

= 7(18)/2

= 63 sq ft

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klio [65]

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The confidence interval for the population mean, given the sample mean μ and the sample standard deviation σ, can be calculated as:

$CI(\mu)=\lbrack x-Z_{1-\frac{\alpha}{2}}\cdot\frac{\sigma}{\sqrt[]{n}},x+Z_{1-\frac{\alpha}{2}}\cdot\frac{\sigma}{\sqrt[]{n}}\rbrack$

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