Answer:
Step-by-step explanation:
8/v=6/v-3
8*(v-3)=6v
8v-8*3=6v
8v-24=6v
+24 +24
8v=6v+24
-6v -6v
2v=24
v=24/2
v=12 miles /hour
v2=12-3=9 miles /hour ( your friend)
Answer:D
Step-by-step explanation:
you plug 4 in for x
f(4)=4^2+2(4)-3
=16+8-3
=24-3
=21
Answer:

Step-by-step explanation:
Given

Required
Convert to fraction
To do this, we simply multiply the fraction by 100%
This gives:



The expression cannot be further simplified.
Take for instance the fraction is: 
Using the same analysis, the percentage would be:




Answer:
Step-by-step explanation:
22: 7/5
23: 15/4
24: 21/8
25: 9/2
26: 16/3
27: 13/7
28: 25/4
29: 32/9
30: 32/3