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Arte-miy333 [17]
3 years ago
5

The primeter of a rectangle is 30 inches.If its lengthis three times its length,find the dimensions

Mathematics
1 answer:
Inga [223]3 years ago
8 0
Perimeter = 30 inches
Length = 3x
Width = X

P = 2L + 2W
30 = 2(3x) + 2(X)
30 = 6x + 2x
30 = 8x
30/8 = 8x/8
3 6/8 = 3 3/4 = X
X = 3.75 inches

The width is 3.75 inches and red length would be 3 times as much or 3(3.75) = 11.25 inches.
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sweet [91]

Answer:

Altitude of cylinder = 10 cm

Step-by-step explanation:

Given:

lateral surface area of cylinder = 90 cm²

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Find:

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Computation:

Circumference of base = Circumference of cylinder

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We know that; 2πr = 9

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3 years ago
213 is 30% of what amount
WITCHER [35]
Start by calling the unknown amount 'x'. We can then set up a relationship to represent the question:

213 = (30\%) \times x
or
213=0.3x

and then solve for x, by dividing both sides of our equation by 0.3

\frac{213}{0.3}=\frac{0.3x}{0.3}
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213 is 30% of 710

To check: 710 \times 0.3 = 213
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3 years ago
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Answer:

4y-9

Step-by-step explanation:

y is the number, 4 times the number = 4y

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4 0
3 years ago
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