Solve a/ -6 + 8 = 12. a=?

the answer is -24

Step-by-step explanation:

a in (-oo:+oo)

a/(-6)+8 = 12 // - 12

a/(-6)-12+8 = 0

-1/6*a-4 = 0 // + 4

-1/6*a = 4 // : -1/6

a = 4/(-1/6)

a = -24

a 10 percent increase

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.