The measures of the angles of a triangle are given x + 4 , x , and 2x. what’s the value of x ?

2 Answers
Feb 28, 2018

x=44

Explanation:

"the sum of the angles in a triangle "=180^@

"add the 3 given angles and equate to 180"

x+4+x+2x=180

rArr4x+4=180

"subtract 4 from both sides"

4xcancel(+4)cancel(-4)=180-4

rArr4x=176

"divide both sides by 4"

(cancel(4) x)/cancel(4)=176/4

rArrx=44

"the 3 angles in the triangle are therefore"

x=44^@,x+4=44+4=48^@,2x=2xx44=88^@

"note that "44+48+88=180^@

x = 44°

Explanation:

Angles in a triangle = 180°

So

(x + 4°) + (x) + (2x) = 180°

4x + 4° = 180°

4x = 176°

x = 44°