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Mkey [24]
2 years ago
9

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

Mathematics
2 answers:
ss7ja [257]2 years ago
6 0

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

romanna [79]2 years ago
4 0

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

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