Answer:
value of x is 20
Step-by-step explanation:
If u got any doubt regarding this u can ask anytime :)
Answer:

Step-by-step explanation:
The formula for nth term of a the sequence is given as 
<u>Finding the 10th term means finding
, which means to plug in 10 into n, in the nth term formula.</u>

Answer:
Perpendicular slope is
or
.
Step-by-step explanation:
Given:
Let the perpendicular slope be x.
The given slope is 
For perpendicular slopes, the product of the slopes is equal to -1.
Therefore, 
Therefore, the perpendicular slope is
or
.
Answer:
B.) Associative Property of Addition
Step-by-step explanation:
This is because none of the numbers change places the only things that move are the parenthesis which correspond with the associative property.