R = 10.5
Step-by-step explanation:
Using Pythagorean theorem, we can write
(OM)^2 + 10^2 = (OR + 4)^2
Since OM = OR, let's call this segment R for brevity.
R^2 + 10^2 = (R + 4)^2
R^2 + 100 = R^2 + 8R + 16
This simplifies to
8R = 84
or R = 10.5
Answer:
it should be D
Step-by-step explanation:
because A is going at y=30x, and B is slower than it. So there's only one choice that matches. which is y=15x
3/4 is definitely bigger <span />
