Im throwing tons of points for these questions so

10. x = 4,-4

11.  x = 2,-2

12. Length = 12 yards, Weight = 6 yards

13.  x = -5,2

10.

Get x by itself

x^2 = 16 (divide by 3 after moving 48 to other side)

Square root

x = 4, -4

11.

Once again get x by itself

x^2 = 4 (divide by 4 after moving 10 to the other side)

Square root

x = 2, -2

12. To find this we will model the equation like so

2W x W = 72

W is the width

2w is the length because it is twice the width

simply

w^2 = 36

square root

width is 6 and the length is 12

13.

To find the solutions we must factor the equation

(x+5)(x-2) satsify the equation

Then solve for x X + 5 = 0 and X - 2 = 0

x = -5, 2

answer is  

c.

36

step-by-step explanation:

a ≈ 172.05

step-by-step explanation:

the pictures.