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3 years ago

A square deck has an area of 81 square feet? How long is each side of the deck?

Mathematics

2 answers:

ss7ja [257]3 years ago

4 0

All 4 sides of a square are of the same length.

The formula for the area of a square is s*s = area where s is the length of one side of the square.

s^2 = 81

s = 9 or -9

-9 does not apply here but 9 does.

Each side of the square deck is 9 feet long.

Veseljchak [2.6K]3 years ago

3 0

Formula for area of a square A=s^2 81=s^2 square root of 81 is 9 all the sides are the same 9 ft hope this helps

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4:3

Step-by-step explanation:

You divide 8 and 6 by 2 to simplify it

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Answer:

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Step-by-step explanation:

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2 years ago

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The physical education instructor asked each student to do a total of 36 pull-ups and push-ups in 1 minute. The instructor wante

NeTakaya

Answer: Pull-ups = 4 and push up = 32

Step-by-step explanation:

Let x represents number of pull ups in one minute.

And, y represents number of push ups in one minute.

Therefore, According to the question,

Each student to do a total of 36 pull-ups and push-ups in 1 minute.

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Therefore, 8x = y

Thus, required system of linear equations that represents this situation is,

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3 years ago

Q6.4☆ Points: 2 Suppose that Angela wants to use her sample to create a 68% confidence interval for the true population median o

Andrei [34K]

Answer:

She needs a sample size of 25.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

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The population SD is 2 grams.

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She needs a sample size of n.

n is found when M = 0.4. So

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$\sqrt{n} = \frac{0.995*2}{0.4}$

$(\sqrt{n})^2 = (\frac{0.995*2}{0.4})^2$

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Rounding up:

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2 years ago

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Lunna [17]

D. opposite sides are parallel

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