Write with positive exponents. Simplify if possible.
-$81 ^ { - 5 / 4 }$
A) $\frac { 1 } { 243 }$
B)243
C)- $- \frac { 1 } { 243 }$
D)not a real number

Name: Write with positive exponents. Simplify if possible. -$81 ^ { - 5 / 4 }$ A) $\frac { 1 } { 243 }$ B)243 C)- $- \frac { 1 } { 243 }$ D)not a real number
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Question

Quizplus · Accepted Answer

$81^{-5/4}$ can be simplified by recognizing that $81 = 3^4$, so $81^{-5/4} = (3^4)^{-5/4} = 3^{-5} = \frac{1}{3^5} = \frac{1}{243}$.

Write with Positive Exponents 81−5/481 ^ { - 5 / 4 }81−5/4

Write with Positive Exponents $81 ^ { - 5 / 4 }$