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katrin [286]
3 years ago
7

What is X-24 = 58; x= 82

Mathematics
1 answer:
Alecsey [184]3 years ago
5 0
But that doesn't really make sense, because if x has already been solved, then the equation makes sense, because if we substitute x into it, then we have 82-24, which is 58. I could be wrong... sooo... but I hope it helps?
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You need a 75% alcohol solution. On hand, you have a 1125 mL of a 90% alcohol mixture. How much pure water will you need to add
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\bf \begin{array}{lccclll}
&amount&concentration&
\begin{array}{llll}
concentrated\\
amount
\end{array}\\
&-----&-------&-------\\
\textit{90\% sol'n}&1125&0.9&(1125)0.9\\
\textit{water}&x&0&0x\\
-----&-----&-------&-------\\
mixture&y&0.75&0.75y
\end{array}

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