Inga is solving 2x + 12x - 3 = 0. Which steps could she use to solve the quadratic equation? Select three options.
20x2 + 6x + 9) = 3 + 18
20x2 +6x) = -3
0 21x²
+ 6x) = 3
Ox+3 = = /21
21x2 + 6x + 9) = -3 + 9

94

step-by-step explanation:

average the numbers and use a variable to figure out the minimum to get a 90.

(79+94+91+92+x)/5=90

x = 94

answer: i wpould go with c

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.