Answer:
r = 4
Step-by-step explanation:
17 = 9 + 2r subtract both sides by 9
8 = 2r divide both sides by 2
4 = r
Answer:
See below.
Step-by-step explanation:
m∠A + m∠B = m∠B + m∠C
Use the subtraction property of equality to subtract m<B from both sides of the equation.
m∠A + m∠B - m<B = m∠B - m<B + m∠C
m∠A = m∠C
Answer:
3.5
Step-by-step explanation:
This is a 30-60-90 triangle so the hypotenuse is equal to 2 times 
.
≈ 3.5
X + y = 90 because the 2 angles add up to 90
Now m < x = five times m < y, so x = 5y or y = x/5
so the last choice is the correct one.
Answer:
x = 22°
Step-by-step explanation:
158 + x = 180
x = 180 - 158
x = 22
