9. One winter day, the temperature increased

Mathematics

1 answer:

Andru [333]3 years ago

8 0

Answer: A~ 45

Step-by-step explanation:

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astraxan [27]

$\bf ~\hspace{7em}\textit{negative exponents}
\\\\
a^{-n} \implies \cfrac{1}{a^n}
~\hspace{4.5em}
a^n\implies \cfrac{1}{a^{-n}}
~\hspace{4.5em}
\cfrac{a^n}{a^m}\implies a^na^{-m}\implies a^{n-m}
\\\\[-0.35em]
\rule{34em}{0.25pt}\\\\
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hope this helps please mark me brainliest

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