Itook a test that has 25 questions. i scored 80 %. how many questions did i get wrong and how many did i get right?

20 good answers, 5 bad.

Step-by-step explanation:

100% - 25 questions

80% - x (correct answers)

x =

25 - x = 25 - 20 = 5 bad answers

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.