First, find the mean. You'll need it to compute the variance.

The variance of the sample is then computed with the formula

The standard deviation is the square root of the variance, so
Answer:
36 ÷ a
55 - b
18 + c
49 x d
e ÷ 62
Step-by-step explanation:
The answer is 24 bc 48 divided by 2 equals 24
Answer:
$12.60
Step-by-step explanation:
12x.05 = .6 then .6+12 is 12.6
sorry if this is wrong lol
To find the side lengths, you have to factor 4x^2 + 28x + 49. This equation factored is (2x+7)(2x+7), so each side length is (2x+7) feet.