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Murrr4er [49]
3 years ago
11

How do I solve this problem? What do I do next?

Mathematics
2 answers:
Nesterboy [21]3 years ago
6 0
If you were to ignore the last sentence and solve without using 34=21+2w, you would get the answer as follows. 
The perimeter of a rectangle is 2w+2l=P, with w representing the width of the rectangle, l representing the length, and P representing the perimeter. Since you know the length is five times more than the width, you can replace l with 5w, so you only have one variable in the equation and you can solve it. If you plug in your 5w for l and 34 for P, the equation now reads 2w+2(5w)=34. Multiply out what's in parentheses, and you get 2w+10w=34, which simplifies to 12w=34. Divide both sides to get w by itself, and you get w=17/6, or w=2.83. Plug this back into the l=5w to get your length value, and you get length equal to 14.17. 
Length: 14.17 units
Width: 2.83 units
Hope this helps!
Anika [276]3 years ago
4 0
34= 21 +2w
34-21=2w
13= 2w
13:2=w
6.5=w
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