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Aneli [31]
3 years ago
11

Please help I can’t understand how to solve this problem

Mathematics
1 answer:
Pavel [41]3 years ago
8 0

The perimeter of the rectangle:

2(4y)+2(3y+3) and 146 units.

We have the equation:

2(4y)+2(3y+3)=146\qquad|\text{use distributive property}\\\\8y+(2)(3y)+(2)(3)=146\\\\8y+6y+6=146\qquad|\text{combine like terms}\\\\14y+6=146\qquad|\text{subtract 6 from both sides}\\\\14y=140\qquad|\text{divide both sides by 14}\\\\y=10\\\\AD=4y\to AD=4(10)=40

Answer: AD = 40 units.

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Step-by-step explanation:

Since we're given the conversion 24 cm for every 3 presents wrapped, we can divide our total amount of tape by this conversion, assuming a constant proportion.

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Cross-multiplying, we have:

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