Which is equal to 1/7^9? Choices: (A)-1/(-7)^-9 (B)1/(-7)^9 (C)(-7)^9 (D)7^-9

Understand Expression: Understand the expression 1/7^9. Rewrite 1/7^9 using negative exponents. 1 / 7^9 = 7^-9Rewrite Using Negative Exponents: Compare the rewritten expression with the choices. (A) -1/(-7)^-9 (B) 1/(-7)^9 (C) (-7)^9 (D) 7^-9 Only choice (D) matches 7^-9.

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Which is equal to $\frac{1}{7^9}$ ? $\newline$ Choices: $\newline$ (A) $-\frac{1}{(-7)^{-9}}$ $\newline$ (B) $\frac{1}{(-7)^9}$ $\newline$ (C) $(-7)^9$ $\newline$ (D) $7^{-9}$

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Math Problems

Grade 8

Understanding negative exponents

Full solution

Q. Which is equal to

\frac{1}{7^9}

\newline

Choices:

\newline

(A)

-\frac{1}{(-7)^{-9}}

\newline

(B)

\frac{1}{(-7)^9}

\newline

(C)

(-7)^9

\newline

(D)

7^{-9}

Understand Expression: Understand the expression $1/7^9$ . Rewrite $1/7^9$ using negative exponents. $1 / 7^9 = 7^{-9}$
Rewrite Using Negative Exponents: Compare the rewritten expression with the choices. $\newline$ (A) $-\frac{1}{(-7)^{-9}}$ $\newline$ (B) $\frac{1}{(-7)^9}$ $\newline$ (C) $(-7)^9$ $\newline$ (D) $7^{-9}$ $\newline$ Only choice (D) matches $7^{-9}$ .