Answer:
Part 1) 
Part 2)
Part 3) 
Step-by-step explanation:
we know that
The equation of the line into slope intercept form is equal to

where
m is the slope
b is the y-coordinate of the y-intercept
Part 1) we have

Simplify
Divide by 20 both sides

isolate the variable y
Subtract x both sides

Divide by 4 both sides
------> equation of the line into slope intercept form
Part 2) we have

Simplify
Divide by 10 both sides

isolate the variable y
Subtract (3x-10) both sides

Divide by 5 both sides
------> equation of the line into slope intercept form
Part 3) we have

Simplify
Divide by 3 both sides

isolate the variable y
Subtract (x-10) both sides

Divide by -5 both sides
------> equation of the line into slope intercept form
Answer: 1/3
Step-by-step explanation: you Have to subtract then simplfy
Answer:
0.5 miles.
Step-by-step explanation:
Remark
I'm going to assume that the total number of sprints was 22. If he sprinted back then there and back counts as 2 sprints.
Formula
Total distance = 22 * 40
Solution
Total distance = 880 yards.
There are 1760 yards in a mile.
The number of miles he ran was 880/1760 = 1/2 mile or 0.5 miles.
Answer:
B) 180 ft. squared
Step-by-step explanation:
Multiply all sides of the figure by 3 because of the scale factor
6 times 12 = 72 (for the rectangular part)
6 times 6/2 = 18 (for the triangular part)
We know that the base and height of the triangle are congruent because of the tic marks
18 + 72 = 90
Multiply by 2 since that is only half of the side of the house
90 times 2 = 180