Answer:

Step-by-step explanation:
Multiply across.

Then Simplify.

15-7 is 8! so 8 is the length of the side with the ?
Answer:
3x-4y=4
Step-by-step explanation:
Answer:
A. (1.55, 2)
Step-by-step explanation:
The formula to apply when finding the midpoint of a segment where the coordinates of the end points are given is;

where (x₁,y₁) and (x₂,y₂) are the coordinates of the end points
Given;
x₁= -0.4 ,y₁=2.5, x₂=3.5, y₂=1.5 then applying the formula for midpoint
