Step by Step :
1. 9(2j + 7 + 5j)
2. (9)(2j) + (9)(7) + (9)(5j)
3. 18j + 63 + 45j
Answer: 63j + 63
Answer:
Simplify the expression.
11
b
−
4
Step-by-step explanation:
Answer:
-4
Step-by-step explanation:
2(-3+1)
Distribute: -6 - (-2)
Answer: -4
1) Mean
The mean is given by the sum of the data divided by the number of data (4, in this case):

2) Standard deviation
The standard deviation is given by:

where

is the mean, that we already found at point 1), and N=4. Substituting data, we have:

Rounded to the nearest tenth the number doesn't change Fam <span />