MauriceLong
USE the formula to find the value of the remaining variable.
P=2L+2W;L=10,W=78
P=_____
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luxiliu
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Just substitute in L and W.
MauriceLong
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how would i do that..
luxiliu
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i.e.
P=2L+2W
P=2(10)+2(78)
MauriceLong
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2*10+2(78)=1716 is that correct
MauriceLong
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the correct answer is 176
luxiliu
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Yep, its 176 :)
MauriceLong
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can u help me with another problem
MauriceLong
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The sum of a page number on the facing pages of a book is 89. What are the page numbers.
The number on the left page is___
The number onthe right page is____
luxiliu
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Well, lets give the first page number the symbol "x". because the second page number has to be one more than "x", it is "x+1".
Therefore, the equation must be...?
MauriceLong
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x+1=89
luxiliu
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it would be 2x+1=89 because you are finding the sum of the two pages :)
luxiliu
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So now just solve to find x :)
MauriceLong
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x=44
luxiliu
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Yep :) so the first page number is 44, and the second is 45 :)
MauriceLong
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Solve for g.
A=gr