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Rashid [163]
3 years ago
15

PLEASE HELP QUICK

Mathematics
1 answer:
Fiesta28 [93]3 years ago
6 0

Answer:

Options (2), (4) and (6)

Step-by-step explanation:

Option (1)

8^{-1}=\frac{1}{8}

Not equivalent to \frac{1}{81}.

False.

Option (2)

9^{-2}=\frac{1}{9^2}

      =\frac{1}{81}

True.

Option (3)

\frac{9^{8}}{9^{4}}=9^{(8-4)}

    =9^{4}

    = 6561

False.

Option (4)

\frac{9^8}{9^{10}}=9^{8-10}

     =9^{-2}

     =\frac{1}{81}

True.

Option (5)

9^{-6}9^{3} = 9^{-6+3}

         = 9^{-3}

         = \frac{1}{9^3}

         = \frac{1}{729}

False

Option (6)

9^{5}9^{-7}=9^{(5-7)}}

          =9^{-2}

          =\frac{1}{9^2}

           =\frac{1}{81}

True.

Therefore, Options (2), (4) and (6) are the correct options.

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