Sam has 15 identical rectangular windows in his home. the length of each window is
twice the width, and the area of each window is 8 square feet. sam wants to put
weather stripping around the perimeters of all the windows.
if the weather stripping costs $0.25 per foot, how much will he spend?

x=30

step-by-step explanation:

step-by-step explanation:

1. perpendicular

2. parallel

3. perpendicular

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.