Answer:
750 miles
Step-by-step explanation:
Given



Required
Determine the number of miles
Represent the number of miles with m
So, we have:



Collect Like Terms


Solve for m


<em>Hence, I travelled 750 miles</em>
Answer:
use the theorem of pythagoras
LM=MN²+LN²
9²=X²+6²
81=X²+36
-x²=36-81
ײ=36+81
ײ=117
x=10
The theorem is: a^2 - b^2 = (a+b) (a-b)
So, let's do this:
64x^2 - 49=
(8x)^2 - (7)^2=
(8x+7) (8x-7)