Answer:
No.
Step-by-step explanation:
There are two different ways to do this - solve for x in the given equation or substitute the value for x and see if you get a true statement.
3x + 7 = 13 subtract 7 from both sides
3x = 6 divide by 3 on both sides
x = 2
3(3) + 7 = 13
9 + 7 = 13
16 ≠ 13
Therefore, x = 3 is not a solution for 3x + 7 = 13.
Answer:
A. Theorems
and
B.Corollaries
Step-by-step explanation:
(i) The mean is

The variance is

Compute the second moment
:

Then the variance is

(ii) For a random variable
, where
are constants, we have

and

Then for
, we have

