SOLUTION: The second angle of a triangle is 4 times as large as the first. The third angle is 70° more than the sum of the other two angles. Find the measure of the second angle

Algebra ->  Angles -> SOLUTION: The second angle of a triangle is 4 times as large as the first. The third angle is 70° more than the sum of the other two angles. Find the measure of the second angle      Log On


   

Question 854779: The second angle of a triangle is 4 times as large as the first. The third angle is 70° more than the sum of the other two angles. Find the measure of the second angle
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
b=4a
c=70+a+b
a+b+c=180
a+4a+70+a+4a=180
10a=110
a=11
b=44 second angle
c=70+55=125