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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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Step-by-step explanation:

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6 0
3 years ago
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Charlie's weight is nine kilograms greater than his brother's. Together they weigh 99 kilograms. Let x represent the weight of t
siniylev [52]


If the weight of the little brother is x, then the weight of  Charles is x + 9

The equation that can be used to determine what each one weighs is:

x + (x + 9) = 99.

Let us now solve it.

x + x +9 = 99

2x + 9 = 99

2x = 99 - 9

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x = 90/2

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Little brother's  weight is 45 kg.

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2 years ago
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In your computation, approximate its value as 3.14.
andrey2020 [161]

Answer: d

Step-by-step explanation:

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A=\pi r^2

12 in would be the diameter, divide by 2 to get the radius.

\frac{12}{2}=6

Plug this into the formula.

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Answer:

4/1/7 ( 4 and 1 over 7)

Step-by-step explanation:

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= 4/1/7 ( 4 and 1 over 7)

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2 years ago
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7/9% of 1 is equal to what fraction of the quantity
swat32
7/9% is not 7/9 of 1, it's 7/9 of 0.01.

So, it is 0.0078

Hope this helps!
6 0
3 years ago
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