Help me! i will give brainilest to thnnswer!!!!!!!!!!1e correct a

Mathematics

1 answer:

o-na [289]2 years ago

6 0

Because the square root of 36 is 6, so if the number on question A is 37 then the answer would be larger than 6. The same goes for the other questions. The square root of 100 is 10 so since the number is 95 is with be smaller than 10. And for the last one the square root of 25 is 5 and the square root of 36 is 6, So the square root of 30 is in between 5 and 6. Hope this helps!!

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$\bf \begin{array}{lccclll}
&\stackrel{liters}{amount}&\stackrel{alcohol~\%}{quantity}&\stackrel{liters}{alcohol}\\
&------&------&------\\
\textit{18\% solution}&x&0.18&0.18x\\
\textit{40\% solution}&y&0.40&0.4y\\
------&------&------&------\\
mixture&10&0.20&2
\end{array}$

$\bf \begin{cases}
x+y=10\implies \boxed{y}=10-x\\
0.18x+0.4y=2\\
----------\\
0.18x+0.4\left( \boxed{10-x} \right)=2
\end{cases}
\\\\\\
0.18x-0.4x+4=2\implies -0.22x=-2
\\\\\\
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