Henry has $45.50 to spend on ballet classes. Each session costs 5$ plus a one time registration fee of $5,50. Let the variable represent the number of classes, Which equation represents the number of classes Henry can attend for $45.50?​

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.

a

step-by-step explanation:

the answer would be 0.54

52.5

step-by-step explanation: