Answer:
x = 20
Step-by-step explanation:
x - 8 = 12 Add 8 to both sides
x -8 + 8 = 12 + 8 Add -8 and 8; add 12 and 8
x = 20
Answer:
see below
Step-by-step explanation:
For simplifying expressions of this sort, there are four rules of exponents that come into play;

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I find it convenient to eliminate the fractions by adding the exponents, then rewrite any negative exponents as denominator factors.

Increasing it by 10% will be 11.55. To find teen percent all you do is make it a decimal then multiplying it by 10.50
30 divided by 60 is 1/2
1/2 miles per minute
10 x 1/2 = 5
5 miles in 10 minutes
Hope this helped