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25.10.2020 •
Mathematics
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The rectangle shown has a perimeter of 88 cm and the given area. Its length is 8 more than three times its width.
Write and solve a system of equations to find the dimensions of the rectangle.
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Ответ:
l=35, w=9
Step-by-step explanation:
l for length, w for width
System: l=8+3w, 2w+2l=88
2w+2(8+3w)=88 (substitute)
2w+16+6w=88 (distributive property)
8w=72 (combine like terms)
w=9 (divide by 8)
l=8+3(9) (substitute)
l=35 (solve for l)
l=35, w=9
Hope this helped :D
Ответ: