Answer:

Step-by-step explanation:
We want to simplify:

We rewrite the expression under the radical sign to obtain:

We split the expression under the radical sign to get:

Recall that:

This implies that:

Therefore 
Answer:
A
Step-by-step explanation:
This is right belive me
Answer: 4 1/10g^5+5 1/4
Step-by-step explanation:
Step-by-step explanation:
let X = speed of slow bicycle rider
2x=speed of fast bicycle rider
3(x+2x)=72
X=8mph(slowest bicycle rider)
2x=16mph(fastest bicycle rider)
I think the answer is 156, I got this by multiplying 12 times 13.