Answer:
16
Step-by-step explanation:
The equation is 3/4x=12, so you would just divide 12 by 3/4 to get 16 as x
Answer:
-25
Step-by-step explanation:
You can take 10÷-⅖=-25
Answer:
Step-by-step explanation:
The last one
Answer:

Step-by-step explanation:
Given : The formula for the area of a trapezoid with altitude k and bases m and n is 
We have solve for m .
Consider the given formula 
Multiply both side by
, we have,

Now subtract n both side, we have,

Thus, 