A small bird uses 5^-4 Joules of energy to sing a song. Write the amount of energy as a decimal. a. 0.0004 c. 0.0016 b. 0.00016 d. 0.000016

asked Jan 7, 2017 31.0k views

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A small bird uses 5^-4 Joules of energy to sing a song. Write the amount of energy as a decimal.

a. 0.0004 c. 0.0016
b. 0.00016 d. 0.000016

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4 votes

The answer is c.
We just have to apply the law of exponents:

=(1)/(5^4)

That´s equal to:

=(1)/(625)=0,0016

Rzlvmp answered Jan 13, 2017