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lorasvet [3.4K]
3 years ago
8

Six rectangles each with a common base width of 2

Mathematics
1 answer:
Yuki888 [10]3 years ago
4 0
91 IS THE AREAS OF THE SIX RECTANGLES
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Find the perimeter of a square with side a. Are the perimeter of the square and the length of its side directly proportional qua
erik [133]

Answer:

The perimeter is 8 cm.

Yes, the perimeter of a square is directly proportional to its side length.

Step-by-step explanation:

Given:

The side length of the square is, a=2\ cm

The perimeter of a square is the sum of all of its side lengths. The perimeter of a square of side length 'a' is given as:

P=a+a+a+a=4a

Plug in a=2\ cm and find perimeter, 'P'. This gives,

P=4\times 2=8\ cm

Therefore, the perimeter is 8 cm.

Now, two quantities are directly proportional only if their ratio is a constant.

Let us find the ratio of 'P' and 'a'.

We have, P=4a

Dividing both sides by 'a', we get:

\frac{P}{a}=\frac{4a}{a}\\\frac{P}{a}=4(Constant)

Therefore, the ratio of perimeter and side length is a constant. Hence, these are directly proportional quantities.

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3 years ago
HI CAN SOMEONE HELP ME FIND THE VOLUME IN THIS MATH QUESTION TY! :)
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Answer:

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Step-by-step explanation:

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Stevie is moving up to the attic and wants to paint a wall white. The wall is a triangle with a base of 20 feet and a height of
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Area = L x H .

Answer - 420 ft
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2 years ago
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How many ways are there to distribute n graded homeworks to n students such that none of them gets their own homework back?
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Assume N students

Student 1 can get (n-1) papers
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Student 3 can get (n-1) papers
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Student N can get (n-1) papers

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World Toy buys bicycles for $40 and sells them for $95. What is the percent mark-up in the price?
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57%

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