20 years ago, Bill bought a computer company for x dollars. He built up the business and it's now worth 13 times more than he paid for it. He wants to sell half and become partners. Express the amount Bill's friend must pay Bill to buy half of the business. -13/4 x

-26 x

-13/2 x

-13 x

And The answer is : 13/2x

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.