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Genrish500 [490]
4 years ago
9

PLEASE HELP! I DON'T UNDERSTAND!! SOMEONE SMART HELP!!!

Mathematics
1 answer:
storchak [24]4 years ago
4 0
\bf \left( 3^8\cdot 2^{-5}\cdot 9^0 \right)^{-2}\cdot \left( \cfrac{2^{-2}}{3^3} \right)^4\cdot 3^{28}
\\\\\\
\left( 3^8\cdot 2^{-5}\cdot 1 \right)^{-2}\cdot \left( \cfrac{2^{-2}}{3^3} \right)^4\cdot 3^{28}\implies \left( 3^8\cdot 2^{-5}\right)^{-2}\cdot \left( \cfrac{2^{-2}}{3^3} \right)^4\cdot 3^{28}

\bf \stackrel{\textit{distributing the exponents}}{\left( 3^{-2\cdot 8}\cdot 2^{-2\cdot -5} \right)\cdot \left( \cfrac{2^{4\cdot -2}}{3^{4\cdot 3}} \right)\cdot 3^{28}}\implies 
\left( 3^{-16}\cdot 2^{10} \right)\cdot \left( \cfrac{2^{-8}}{3^{12}} \right)\cdot 3^{28}

\bf \cfrac{3^{-16}\cdot 2^{10}\cdot 2^{-8}\cdot 3^{28}}{3^{12}}\implies \cfrac{3^{-16}\cdot 3^{28}\cdot 2^{10}\cdot 2^{-8}}{3^{12}}
\\\\\\
\cfrac{3^{-16+28}\cdot 2^{10-8}}{3^{12}}\implies \cfrac{\underline{3^{12}}\cdot 2^2}{\underline{3^{12}}}\implies 2^2\implies 4
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It takes about 4 days for the temperature to decrease by 9°F.

An equation is an expression that shows the relationship between two or more variables or numbers.

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2 years ago
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3 years ago
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kherson [118]
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4 years ago
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timurjin [86]
The <span>given the piecewise function is :
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f(x) = \[ \begin{cases} &#10;      2x & x \ \textless \  1 \\&#10;      5 & x=1 \\&#10;      x^2 & x\ \textgreater \ 1 &#10;   \end{cases}&#10;\]

To find f(5) ⇒ substitute with x = 5 in the function → x²
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To find f(2) ⇒ substitute with x = 5 in the function → x²
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================================
So, the statements which are true:<span>
\framebox {B. f(2) = 4} \ \framebox {D. f(1) = 5}</span><span></span>
8 0
4 years ago
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