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katrin [286]
3 years ago
10

Jillian is trying to save water, so she reduces the size of her square grass lawn by 8 feet on each side. the area of the smalle

r lawn is 144 square feet. in the equation(x – 8)^2 = 144, x represents the side measure of the original lawn.what were the dimensions of the original lawn?4 feet by 4 feet8 feet by 8 8 feet by 8 20 feet by 20 feet
Mathematics
2 answers:
tatiyna3 years ago
7 0
(x - 8)^2 = 144
take the sq rt of both sides
x - 8 = 12
x = 12 + 8
x = 20

20 feet by 20 feet
Vsevolod [243]3 years ago
6 0

Answer:

D is the answer

Step-by-step explanation:

Edgunity 2020 :)

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Binomial probability:

Expected value for the participation rate: The expected value is the probability of a success. In this problem, a success is a working age people being in the labor force. 63.7% of them are. So \pi = 0.637. This means that the expected participation rate is 0.637.

Standard error for the participation rate:

The standard error is given by the following formula:

\sigma = \sqrt{\frac{\pi(1-\pi)}{n}}.

In this problem, 120 people are asked, so \pi = 120

s = \sqrt{n\pi(1-\pi)} = \sqrt{\frac{0.637*(1-0.637)}{120}} = 0.04397.

So the standard error is 0.04397

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