Arectangle has an area of (12m-30n) square units. its width is 6 units. factor the expression for the area to find an expression for the length of the rectangle.

2m - 5n

Explanation:

Using long division

     2m - 5n  

6 ) 12m - 30n

width*length = area

6(2m - 5n) = 12m - 30n

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.