Six more than the product of seven and a number is 55. which equation and solution correctly represent this sentence? + 6 = 55; x = 7 7x + 6 = 55; x = 7 + 6 = 55; x = 49 7x + 6 = 55; x = 49

The answer is,

7x + 6 = 55

7x = 55 - 6

7x = 49

x = 49/7

x = 7

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.