Answer:
150
Step-by-step explanation:
The are is the sum of are of square and area of triangle.
A=A1+A2
A1=a*a=10*10=100
A2=a*h/2=10*10/2=50
A=100+50=150
3 meters per minute is the rate.
7.5/3 = how much minutes he walked.
7.5/3 = 2.5
Answer: It walked for 2.5 minutes.
Answer: -5/2
Explanation: Rise over Run. Since the line is going downwards, the slope is negative
The midpoint of the line having the endpoints

and

is

basically average them
so given that the line has the endpoints of (-3,7) and (9,-2)
x₁=-3
y₁=7
x₂=9
y₂=-2
so the midpoint can be found by doing



the midpoint is