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Lera25 [3.4K]
2 years ago
8

What the power a when 5^a = 1/125

Mathematics
1 answer:
Advocard [28]2 years ago
3 0

Answer:

a = -3

General Formulas and Concepts:

<u>Algebra I</u>

  • Solving Exponential Equations
  • Exponential Property [Rewrite]: \displaystyle b^{-m} = \frac{1}{b^m}

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify</em>

<em />\displaystyle 5^a = \frac{1}{125}<em />

<em />

<u>Step 2: Solve for </u><em><u>a</u></em>

  1. Rewrite:                                                                                                                \displaystyle 5^a = \frac{1}{5^3}
  2. Rewrite [Exponential Property - Rewrite]:                                                       \displaystyle 5^a = 5^{-3}
  3. Set:                                                                                                                    \displaystyle a = -3
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