Answer:
x = - 10
Step-by-step explanation:
Average is calculated as
average =
, thus
= 3
Multiply both sides by 3 to clear the fraction
19 + x = 9 ( subtract 19 from both sides )
x = - 10
5×3=15 so 15÷ 3=5, The answer to this question would be is 5.
Answer:
-4 x -4 = -16
4 x 4 = 16
^2 or to the power of 2 basely means 4 times itself, because 2.