What is X in (3x-12)° on question number 7?

Question

asked May 5, 2019 235k views

1 Answer

Fernando Basso · Answer 1 · 2019-05-12T08:07:53+0000

The exterior angle is equal to the sum of the opposite interior angles.
(4x+9) = (2x) + (3x-12)
4x + 9 = 5x - 12 . . . . . . . . collect terms
21 = x . . . . . . . . . . . . . . . .add 12-4x

Then the exterior angle is
(4·21+9)° = 93°

What is X in (3x-12)° on question number 7?

Please log in or register to add a comment.

Please log in or register to answer this question.

1 Answer

Please log in or register to add a comment.

No related questions found

Categories

Other Questions