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Svetlanka [38]
2 years ago
8

The width of a rectangle is 3/4 its length. The perimeter of the rectangle is 240 ft. What is the length, in feet, of the rectan

gle?
Need help ASAP!
Mathematics
1 answer:
zalisa [80]2 years ago
4 0

Answer: 51.4275 or 51.428571 (repeating decimals) feet

Step-by-step explanation:

P = perimeter

L = length

W = width

Represent W as  \frac{3}{4} L

Find L

P = 2L + 2W

240 = 2L + 2(\frac{3}{4}L)

240 = 2L + \frac{3}{2} L  or you can write 3/2 as 1.5

240 = 2L + 1.5L

240 = 3.5L

\frac{240}{3.5} L = \frac{3.5L}{3.5}

L =  ≈ 68.57 or 68.571428 (but this is <em>repeating decimals</em> so I rounded it)

Find W

\frac{3}{4} L

\frac{3}{4}  * 68.57 = 51.4275

Or if you want unrounded version 51.428571 (repeating decimals)

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