Answer: 30
Step-by-step explanation:
The angles of triangles have to add up to 180°
So:
x + x + 70 + x + 20 = 180
Bring like terms together
x + x + x + 70 + 20 = 180
3x + 90 = 180
Subtract 90 from both sides
3x = 90
Divide both sides by 3
x = 30
45
1. Area = 1/2 B(base) x H(height)
2. Area = 1/2 9 x 10
3. Area = 1/2 90
4. Area = 45 inches
Answer:
15%
16/40
Values are:
x x²
10 100
5
-7.69%
