Select all the equations where y=10equals, is a solution. Choose 2 answers:

A
y+11=22

B
8=18-y

C
60=6y

D
y/5=4

E
10y=20

B and C

Step-by-step explanation:

A. y + 11 = 22         →  subtract 11 from both sides:

    y = 11

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B. 8 = 18 - y           →  subtract 18 from both sides:

    -10 = -y              →  divide both sides by -1:

     10 = y

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C. 60 = 6y             →  divide both sides by 6:

    10 = y

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D. = 4                  →  multiply both sides by 5:

   y = 20

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E. 10y = 20            →  divide both sides by 10:

     y = 2

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.

kaahe btau