Complementary angles add up to 90°
∠BDC + ∠CDA = 90°
Answer: ∠BDC
Answer:
.2
Step-by-step explanation:
When you do 64/80 you get 0.8 which means that the percent decrease is .2
What's the actual question? That's the same as the radius of the circle if that's what you're asking
Answer:

Step-by-step explanation:
Ok first multiply the first two monomials:

Then multiply THAT with the OTHER monomial:

This should be the answer. Let me know if it's wrong.