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Scorpion4ik [409]
3 years ago
5

PLEASE ANSWER The length of a rectangle is 4 centimeters (cm) less than three times the width. The perimeter is 64 cm. Find the

width and length. ( Hint: Perimeter = 21 + 2w)
Mathematics
2 answers:
Temka [501]3 years ago
5 0

L=3w-4

Perimeter = 64

64=2L+2w

Plug in L that we solved above into this equation:

64=2(3w-4)+2w

64=6w-8+2w

64=8w-8

72=8w

w=9

Plug W back into the equation above to solve for L

L=3w-4

L=(3)(9)-4

L=23

Check the answer with the perimeter formula:

P=2L+2w

P=2(23)+2(9)

P=46+18

P=64

user100 [1]3 years ago
4 0

Answer:


Step-by-step explanation:

20 cm by 12 cm

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