Karen took a science test where each correct answer was worth 2.5 points. She also correctly answered the bonus question worth 8 points. Her total points earned on the test was 45.5. Write and solve an equation to determine the number of questions Karen answered correctly

add an !

step-by-step explanation:

kk.bj.

step-by-step explanation:

.mnm.kn.kj

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.

i need more details sorry

step-by-step explanation: