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Lerok [7]
4 years ago
8

A rectangular folder has a perimeter of 30 inches and an area of 54 square inches. What are the dimensions of the folder?

Mathematics
1 answer:
-Dominant- [34]4 years ago
3 0
We know, perimeter = 2(l + w)
So, 2(l + w) = 30
2l + 2w = 30
Divide the equation 2, 
l + w = 15

Now, Area = l * w
l * w = 54

Substitute the value of l from previous equation, 
(15-w) * w = 54
15w - w² = 54
w² - 15w + 54 = 0
w² - 6w - 9w + 54 = 0
w(w - 6) -9(w - 6) = 0
(w-6)(w-9) = 0
w = 6 or 9

In short, Your Dimensions would be: 6 × 9 in

Hope this helps!
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3 years ago
a baby boy weights 7 lb 8 oz. A five year old weights 48 lb. write the ratio of the baby's weight to the boys weight as a fracti
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4 0
4 years ago
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zaharov [31]

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Hope this helps!

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8 0
3 years ago
3M + 7 - 8 + 33 + 2M <br> help me
Alecsey [184]

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Step-by-step explanation:

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3 0
3 years ago
PLEASE HELP!! What is ∠ PTQ?
Mnenie [13.5K]

Answer:

Angle PTQ= 40

Step-by-step explanation:

Angle PTQ and angle RTS are complementary that means they are the same

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6 0
3 years ago
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