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Math help

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$Define $E(a,b,c) = a \times b^c$. What positive value of $r$ is the solution to the equation $E(r,r,3) = 625$?$

Guest Nov 6, 2014

Best Answer

+23254

+5

E(r, r, 3) = 625 = r x r^3 = r^4

625 = r^4

Find the fourth root of both sides:

625^(1/4) = r

---> r = 5

geno3141 Nov 6, 2014

1⁺⁰ Answers

+23254

+5

Best Answer

E(r, r, 3) = 625 = r x r^3 = r^4

625 = r^4

Find the fourth root of both sides:

625^(1/4) = r

---> r = 5

geno3141 Nov 6, 2014

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