Answer:
triple the answer
Step-by-step explanation:
.1×250=25
.3×250= 75
25×3=75
Answer: 47? 89? Idek Fr Fr
Step-by-step explanation:
I just want points.
Answer:
okay let's start
Step-by-step explanation:

You mean what is the slope of a line parallel to the line whose slope is -2?
The answer is -2... the slopes of parallel lines are equal
Answer:
The answer is 27
Step-by-step explanation:
The reason being, you can solve this 2 ways.
1) Combine like terms, 7a-4a = 3a.
Now just substitute (a=9) into 3a.
3 * (9) = 27.
2) Or just substitute a = 9 into the original expression.
7 * (9) - 4 * (9)
= 63 - 36 = 27