Answer:
x = 25
Step-by-step explanation:
The Exterior Angle Theorem states that the exterior angle of a triangle is equal to the sum of the two opposite interior angles.
This means that
3x - 10 = 25 + (x+15)
3x - 10 = x + 40
Subtract x from both sides of the equation.
2x - 10 = 40
Add 10 to both sides.
2x = 50
Divide both sides by 2.
x = 25
Answer:
it can be anything.
Step-by-step explanation:
A = 30% of B = 0.3B
B = 90% of C = 0.9C
A = 0.3(0.9C) = 0.27C = 27% of C
Answer: (bc+2ac+3ab)/(abc)