evaluate 5^28·5^-32·5^-4 A. 17,920 B. 0.017920 C. 0.000256 D. 0.00000256

Question

evaluate 5^28·5^-32·5^-4
A. 17,920
B. 0.017920
C. 0.000256
D. 0.00000256

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Hưng Khoa 5 years 2021-08-27T19:50:48+00:00 2 Answers 21 views 0

Answers ( )

  1. lethu
    0
    2021-08-27T19:51:57+00:00
    Reply

    Answer:

    D 0.00000256

    Step-by-step explanation:

    5^{28} *5^{-32}*5^{-4}=5^{28-32-4}=5^{-8}=\frac{1}{5^{8}} =0.00000256

  2. phucdien
    0
    2021-08-27T19:52:27+00:00
    Reply

    Answer:

    B. 0.000256

    Step-by-step explanation:

    5^28 . 5^- 32 . 5^ -4

    = 5^( 28 – 32 – 4 )

    = 5^( 28 – 36 )

    = 5^- 8

    = 1 / 5^8

    = 1 / 390625

    = 0.000256

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