Question

A triangle has three angles that measure 20 degrees, 60 degrees and
(5x - 25). What is the value of x?

Answer 1

Answer:

x=25  

Step-by-step explanation:  

A traingle has an area of 180 degrees, so we subtract 20 and 60, and are left with 100. 5x-25=100, add 25 to get that 5x=125, divide by 5 to get that x=25.