Plz i need , due tommorow!

(i just need the work)

x ≤−9

Step-by-step explanation:

2x+15≤x/3

Simplify both sides of the inequality.

2x+15≤1/3x

Subtract 1/3x from both sides.

2x+15−1/3x≤1/3x−1/3x

5/3x+15≤0

Subtract 15 from both sides.

5/3x+15−15≤0−15

5/3x ≤ −15

Multiply both sides by 3/5.

(3/5)*(5/3x)≤(3/5)*(−15)

x≤−9

step-by-step explanation:

i think you should think about the question and not look online.

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.