Answer:
17
Step-by-step explanation:
We are given the expression find x + 9 if x = 8.
When a certain number has a variable and the value of the variable is known, all you have to do is plug in the variable amount into the equation, therefore :
x is 8 , so we plug in 8 for x
x + 9 =
8 + 9 = 17
Answer:

Step-by-step explanation:
f=v+at
It requires you to make a the subject of the formula
f-v=at
Dividing both sides by t then

Therefore, the equivalent for a is 
AC = x, CD = 2x cause of 30° angle. Use pythagoras then
Answer:
A B and E
Step-by-step explanation: