Answer:
The answer is 16 .
Step-by-step explanation:
Hope you got it
Put an open circle pointing to the left on -1
Angle QRT is an exterior angle to the triangle. The rule is that the exterior angle of a triangle is equal to the sum of its remote interior angles. Those remote interior angles are angle RTS and angle TSR. So our equation is
. We can remove the parenthesis and simplify by combining like terms to get 9x = 5x + 9 + x and 9x = 6x + 9 and 3x = 9. That means that x = 3.
The answer to your question is in this order :
-10, 0, 11, 20