4. The area of a square field is 100 acres. Find its perimeter.

40

Step-by-step explanation:

Assuming that square has 4 sides equal to to each other

We can say "a" for each side

The forumla for area of the square is

And the perimeter forumla is 4a

=100

a=10

4a=40

a) y = -3x +2

b) y = 1/2x -6

these 2 can be combined into one equation.

-3x +2 = .5x -6

8 = 3.5x

x = 8 / 3.5 = 2.2857142857

y = -3 * (8 / 3.5) +2

y = (-24 / 3.5) + 2

y = -4.8571428571

step-by-step explanation: