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

User Zanyman
by
3.9k points

2 Answers

7 votes

Answer:

B. 0.000256

Explanation:

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

= 5^( 28 - 32 - 4 )

= 5^( 28 - 36 )

= 5^- 8

= 1 / 5^8

= 1 / 390625

= 0.000256

User Trebuchet
by
4.1k points
4 votes

Answer:

D 0.00000256

Explanation:


5^(28) *5^(-32)*5^(-4)=5^(28-32-4)=5^(-8)=(1)/(5^(8)) =0.00000256

User Alberto De Paola
by
4.1k points