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2 years ago

The thickness of each eraser is 17mm. A stack of 230

Mathematics

2 answers:

Sauron [17]2 years ago

8 0

Answer:

A because there is not a logical explanation of how it could be more than 230.

Step-by-step explanation:

eimsori [14]2 years ago

7 0

Answer:

Step-by-step explanation:

about 4000 meters tall

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Solve both by substitution method (algebra 2) and show work please<br><br> -2x-7y=22<br>-7x-5y=-1

Alex17521 [72]

$\bf \begin{cases}
-2x-7y=22\\
-7x-5y=-1
\end{cases}\qquad \textit{let's solve the \underline{second one} for "x"}
\\\\\\
-7x-5y=-1\implies -7x=5y-1\implies x=\cfrac{5y-1}{-7}
\\\\\\
\boxed{x=\cfrac{1-5y}{7}}\impliedby \textit{now, let's substitute it in the \underline{first one}}
\\\\\\$

$\bf -2\left( \frac{1-5y}{7} \right)-7y=22\implies \cfrac{10y-2}{7}-7y=22
\\\\\\
\textit{now, let's multiply both sides by 7, to toss the denominator}
\\\\\\
7\left( \cfrac{10y-2}{7}-7y \right)=7(22)\implies 10y-2-49y=154
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-39y=156\implies y=\cfrac{154}{-39}\implies \boxed{y=-4}
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\textit{now, let's use that in the \underline{first one}}
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\boxed{3=x}$

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3 years ago

I'd sure hope others know how to do this..

ivann1987 [24]

Answer:

omgg they literally deleted 10 x 5

Step-by-step explanation:

it's 50, I'll be the calculator fam

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3 years ago

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antiseptic1488 [7]

Answer:

Step-by-step explanation:

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