The square root of 10 because
sqrt(10) ^2 * 3.14 =
10*3.14 = 31.4
We have been given that the standard deviation of a group of 20 scores is 15 and we are asked to find variance.
Since we know variance is square of standard deviation. In order to find out the variance of the given data we have to take the square of 15.

Therefore, our variance is 225.
Answer:
3(6+4) ._. hope this helps
Answer: C
Step-by-step explanation:
1) Multiply (2x+8)(6x+2)
2) After you do the math you will get 12x^2+52x+16
REMEMBER: A= Length times width
Depending on what his account balance was before the withdrawals the answer may vary.
The answer would be -450 though