Someone help me please! i will rewars brainliest! this is geometry​

0.6

Step-by-step explanation:

0.5

Step-by-step explanation:

Since the three portfolios are 20%, 30% and 50%, and the 20% and 30% are already there in the form of 0.2 and 0.3, then Z must be the 50%, or 0.5

idk

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.