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Julli [10]
3 years ago
6

10x^3 y^-5 z^-2 if x=3 y=2 and z=5 express your answer as a reduced fraction

Mathematics
1 answer:
sineoko [7]3 years ago
7 0

Answer:

\large\boxed{\dfrac{27}{80}}

Step-by-step explanation:

Put x = 3, y = 2 and z = 5 to the given expression 10x^3y^{-5}z^{-2}:

10(3^3)(2^{-5})(5^{-2})\qquad\text{use}\ a^{-n}=\dfrac{1}{a^n}\\\\=\dfrac{10(27)}{(2^5)(5^2)}=\dfrac{270}{(32)(25)}=\dfrac{270}{800}=\dfrac{27}{80}

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