Question

In an equilateral triangle, each angle is represented by 5y+3. What is the value of y?

A. 9.7
B. 10.8
C. 11.4
D. 7.2

Answer 1

y= 11.4

Explanation:

In an equilateral triangle, each angle is the same

180/3=60

So each angle equals 60

5y+3 =60

Subtract 3 from each side

5y +3-3 = 60-3

5y = 57

Divide by 5

5y/5 = 57/5

y = 11.4