SOLUTION: I can't figure this out. My text book problem reads as: The first angle of a triangle is four times as large as the second. The measure of the third angle is 30 degrees less th

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Question 855524: I can't figure this out. My text book problem reads as:
The first angle of a triangle is four times as large as the second. The measure of the third angle is 30 degrees less than that of the second. How large are the angles?
So far I know that the formula is A=1/2 bh
I wrote my problem down as
x+4x+x-30=180
6x-30=180
6x=210
Now I am stuck.
Answer by ewatrrr(24785)   (Show Source): You can put this solution on YOUR website!
 

Hi,

x+4x+x-30=180   |Good Work on the Set UP

  6x = 210 

   

   x = 35° 

Angles are: 35°, 140°,  5°

CHECKING our answer***

 sum of angles = 180°

Wish You the Best in your Studies.

 

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