Question

Can someone make sure my answers are right for a medal?
I think 1 is d, 2 is d, 3 is d, 4 is b and 5 is b am I right ?

Answer 1

Simplify 11 to the negative 4th power over 11 to the 8th power.

1 over 11 to the 12th power

1 over 11 to the 4th power

114

1112


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Question 2 (Multiple Choice Worth 4 points)


In which expression should the exponents be multiplied?

(53)−4

one third to the 4th times one third to the 7th

3 to the 7th over 3 to the 15th

45 ⋅ 42


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Question 3 (Multiple Choice Worth 4 points)


Which expression is equivalent to (73)−2?

1 over 7 times 7 times 7 times 7 times 7 times 7

7

1 over 7

negative 1 over 7 times 7 times 7 times 7 times 7 times 7


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Question 4 (Multiple Choice Worth 4 points)


Simplify 6 to the 5th over 7 to the 3rd all raised to the 2nd power.

6 to the 7th over 7 to the 10th

6 to the 10th over 7 to the 6th

6 to the 3rd over 7

12 to the 5th over 14 to the 3rd


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Question 5 (Multiple Choice Worth 4 points)


Simplify 12 to the 3rd over 12 to the 7th.

124

1 over 12 to the 4th

1 over 12 to the negative 4th

1210