The length of a rectangle is 4 times its width. the rectangle’s width is 8 m. what is the area of the rectangle?

The area of the rectangle is 256 m².

Step-by-step explanation:

It is given that,

Width of a rectangle, b = 8 m

The length of a rectangle is 4 times its width, l = 4 b

Length,

The area of the rectangle is given by :

So, the area of the rectangle is . Hence, this is the required solution.

y=x+9

?

step-by-step explanation:

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.