Answer:
r≈21.01cm
Step-by-step explanation:
I think that's the exact answer
Answer:
x=6561
Step-by-step explanation:
We can solve this equation for x to get

Answer: 0.3
Step-by-step explanation:
If x and 71 degrees are side by side, it can be a complementary if it is exactly 90 degrees, supplementary if it is 180 degrees....

So y=2x is the only answer that fit y=kx, while k=2