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Which exponential expression is equivalent to 
root(9)(z) ?
Choose 1 answer:
(A) 
z^(9)
(B) 
(1)/(z^((1)/(9)))
(C) 
(1)/(z^(9))
(D) 
z^((1)/(9))

Which exponential expression is equivalent to z9 \sqrt[9]{z} ?\newlineChoose 11 answer:\newline(A) z9 z^{9} \newline(B) 1z19 \frac{1}{z^{\frac{1}{9}}} \newline(C) 1z9 \frac{1}{z^{9}} \newline(D) z19 z^{\frac{1}{9}}

Full solution

Q. Which exponential expression is equivalent to z9 \sqrt[9]{z} ?\newlineChoose 11 answer:\newline(A) z9 z^{9} \newline(B) 1z19 \frac{1}{z^{\frac{1}{9}}} \newline(C) 1z9 \frac{1}{z^{9}} \newline(D) z19 z^{\frac{1}{9}}
  1. Express 99th Root as Exponent: We need to express the 99th root of zz as an exponent. The 99th root of a number is the same as raising that number to the power of 19\frac{1}{9}.
  2. Write Expression for 99th Root of z: The expression for the 99th root of zz can be written as z1/9z^{1/9}. This is because in general, the nnth root of a number xx is x1/nx^{1/n}.
  3. Analyze Given Options: Now we look at the options given to find which one matches our expression z19z^{\frac{1}{9}}.
    (A) z9z^{9} is incorrect because it represents zz raised to the 9th9^{\text{th}} power, not the 9th9^{\text{th}} root of zz.
    (B) 1z19\frac{1}{z^{\frac{1}{9}}} is incorrect because it represents the reciprocal of the 9th9^{\text{th}} root of zz.
    (C) 1z9\frac{1}{z^{9}} is incorrect because it represents the reciprocal of zz raised to the 9th9^{\text{th}} power.
    (D) z19z^{\frac{1}{9}} is correct because it represents the 9th9^{\text{th}} root of zz.
  4. Identify Correct Answer: The correct answer is (D) z19z^{\frac{1}{9}}, which is equivalent to the 99th root of zz.

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