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bulgar [2K]
4 years ago
7

I don’t understand this

Mathematics
1 answer:
Lunna [17]4 years ago
3 0

Answer:

it means that

y–x+6.8= 7.2–(–2)+6.8

–(–) will change into +

=7.2+2+6.8

=7.2+2.0+6.8

=16

<h2><em>hope</em><em> </em><em>u</em><em> </em><em>understood</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em></h2>

<em>Please</em><em> </em><em>mark</em><em> </em><em>me</em><em> </em><em>as</em><em> </em><em>Brainliest</em><em> </em>

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M(n+r)=s solve for n. Show two methods.
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Answer:

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Step-by-step explanation:

1. Undo the operations done to n, in reverse order. Here, n has r added and the sum is multiplied by m. First we divide by m, then we subtract r.

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2. Eliminate the parentheses, then proceed as above. Subtract the added term, then divide by the coefficient of n.

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Answer:

Hence the System of equation are \left \{ {{x+y=12} \atop {0.1x+0.25y=2.25}} \right.

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Step-by-step explanation:

Let Number of dimes be 'x'.

Also Number of quarters be 'y'.

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So the equation can be framed as;

x+y=12 \ \ \ \ equation \ 1

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10(0.1x+0.25y)=2.25\times10\\\\10\times0.1x+10\times0.25y=22.5\\\\x+2.5y=22.5 \ \ \ \ equation\ 3

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