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Scilla [17]
2 years ago
14

Find k and help with the equation!

Mathematics
1 answer:
anzhelika [568]2 years ago
6 0
<h3>Answer:   k = 6+10x</h3>

=======================================================

Work Shown:

64*4^{5x}\\\\\left(2^6\right)*\left(2^{2}\right)^{5x}\\\\\left(2^6\right)*\left(2^{2*5x}\right)\\\\\left(2^6\right)*\left(2^{10x}\right)\\\\2^{6+10x}\\\\

The result is in the form 2^k with k = 6+10x

------------------------

Explanation:

First we need to get everything as an exponential expression with a base 2.

We rewrite 64 as 2^6 and 4 as 2^2 in the second step.

In the third step, I used the rule (a^b)^c = a^{b*c} which says to multiply the exponents together. That's how I went from (2^2)^{5x} to 2^{2*5x}. Then the 2*5x in the exponent becomes 10x.

To wrap things up, I used the rule a^b*a^c = a^{b+c} which says to add the exponents when we multiply stuff of the same base together.

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