Help pls thank you ;)

don't give me a Website for awnser ​

C

Step-by-step explanation:

Using Pythagoras' identity in the right triangle

h² + 8² = 20²

h² + 64 = 400 ( subtract 64 from both sides )

h² = 336 ( take the square root of both sides )

h = → C

answer: -0.5 would be the most likley outcome

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.