SOLUTION: Let ∠A and ∠B be supplementary angles and let m∠A=(x^2+ 12x) and let m∠B=(3x^2+20) . What is(are) the value(s) of x? What are the measures of the angles?

Algebra ->  Angles -> SOLUTION: Let ∠A and ∠B be supplementary angles and let m∠A=(x^2+ 12x) and let m∠B=(3x^2+20) . What is(are) the value(s) of x? What are the measures of the angles?      Log On


   



Question 1164299: Let ∠A and ∠B be supplementary angles and let m∠A=(x^2+ 12x) and let m∠B=(3x^2+20)
. What is(are) the value(s) of x? What are the measures of the angles?

Answer by josgarithmetic(39630) About Me  (Show Source):
You can put this solution on YOUR website!
The sum of their measures is 180 degrees. Work with the equation which follows, x%5E2%2B12x%2B3x%5E2%2B20=180 . Mostly uncomplicated algebra.