Answer:
2h 5min
Step-by-step explanation:
1 class: 25 min
5 classes: 25 x 5 = 125 min = 2h 5min
Answer:
so she'll have a weekly allowance of 10$
Step-by-step explanation:
12-7=5 then 5×2 =10
0024r8 is the answer of your problem.
So the rule with dividing exponents of the same base is to just subtract the exponents. Using this rule, we solve the equation as such:

Next, assuming that you only want positive exponents, to get from a negative exponent to a positive one the rule is
. Using this rule, your final answer is going to be 
A.In Step 2, 90 should be multiplied by the quantity 10 – 12, not by 10.
correct:
90(10 - 12) = 90 · 10 - 90 · 12 or 90(10 - 12) = 90 · (-2)