3 years ago

calculate the area of cut and fill for the following road way section in sq ft and then convert to sq yd

Mathematics

1 answer:

lyudmila [28]3 years ago

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Elena L [17]

Answer:

$area \: of \: a \: square = {x}^{2} \\ here \: {x}^{2} = 50 \\ x = \sqrt{50} = \sqrt{2 \times 25} = 5 \sqrt{2} \\ one \: side = 5 \sqrt{2} yard$

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3 years ago

In a sample of 35 high school seniors, 14 of them are attending college in the fall. Find the 95% confidence interval for the tr

kati45 [8]

Answer:

Between 23.77% and 56.23%

Step-by-step explanation:

On your TI-84

Press STAT

Use right arrow to scroll over to highlight TESTS

Use down arrow to scroll down to A:1-PropZInt...

Press ENTER

Make the screen read

x:14

n:35

C-Level:0.95

Calculate

highlight Calculate

Press ENTER

See this:

(.2377,.5623)

p(hat)=.4

n=35

The confidence interval is 0.2377 < p < 0.5623

Between 23.77% and 56.23%

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