Please help me find y. Thank you

y = 12

Step-by-step explanation:

(because angles of triangles sum up to 180 degrees)

3y + 4 + 7y + 8 + 2y + 24 = 180

add like terms together

12y + 36 = 180

subtract 36 from both sides

12y = 144

divide 12 from both sides

y = 12

c is the correct answer

step-by-step explanation:

x =±sqrt(1/3)

step-by-step explanation:

x+4/6x=1/x

multiply each side by 6x to get rid of the fractions

6x*(x+4/6x)=1/x*6x

distribute

6x^2 +4 = 6

subtract 4 from each side

6x^2 +4-4 = 6-4

6x^2 =2

divide by 6

6x^2/6 = 2/6

x^2 = 1/3

take the square root of each side

sqrt(x^2) = ±sqrt(1/3)

x =±sqrt(1/3)