We know:
and
These expressions have an 
term in common. We can combine them if we can find forms of the expressions in terms of :
Now, because 
(by the reflexive property), we can write:
This is our answer, A.
Fist you need to substitute the value of R into the equation
25-6(3)
Now you simply
First multiple 6(3)
25-6(3)
25-18
Now solve!
25-18
7
The answer is 7
Answer:
2-3/8 = 2.375
2-2/5 = 2.4
2.4 - 2.375 = 0.025
Your friend's skateboard ramp is 0.025 foot higher
than your skateboard ramp is.
That's about 1.1% higher . . . 0.3 inch, or about 7.62 milometers.
So first u need to take a math torture
Your answer should be:
(10-6)x(2+8)=40
