Answer: x=10
Step-by-step explanation: All three corners added up equals 180 degrees. 180-57=123 123-(4+9)=110 110/ (4+7) = 10
Answer:
x=10
Step-by-step explanation:
Interior Angle sum of a triangle is 180. So the angle measures are 57, 4x+4, and 7x+9. You can make an equation of 11x+70=180 by adding the angle measures together. Subtract 70 from both sides, so 11x= 110. x=10.
