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Ivan
3 years ago
15

Jacquie has 20 postcards in her collection. each time she goes on vaction she buys 8 postcard to add to her collection. The tota

l number of postcards y can be represented by the equation y=8x+20.
Mathematics
1 answer:
SVEN [57.7K]3 years ago
5 0
Yes it can, hope this helps :)
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What conclusion can be made based on this multiplication problem?
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I believe it is twenty-one is 7 times the size of 3

Step-by-step explanation:

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What is the slope of the line that passes through (-12, -5) and (0, -8)?
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-3/12

Step-by-step explanation:

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A rectangle and a square have the same area. a. The width of the rectangle is w inches. The length of the rectangle is 15 inches
harkovskaia [24]

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Answer:

  a) w(4w-15)

  b) w²

  c) w(4w -15) = w²

  d) w = 5

  e) 5 by 5

Step-by-step explanation:

a) If w is the width, and the length is 15 less than 4 times the width, then the length is 4w-15. The area is the product of length and width.

  A = w(4w -15)

__

b) If w is the side length, the area of the square is (also) the product of length and width:

  A = w²

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c) Equating the expressions for area, we have ...

  w(4w -15) = w²

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d) we can subtract the right side to get ...

  4w² -15w -w² = 0

  3w(w -5) = 0

This has solutions w=0 and w=5. Only the positive solution is sensible in this problem.

The side length of the square is 5 units.

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e) The rectangle is 5 units wide, and 4(5)-15 = 5 units long.

The rectangle and square have the same width and the same area, so the rectangle must be a square.

4 0
3 years ago
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Katyanochek1 [597]

Answer:

y = -8x² + 8x + 48

Step-by-step explanation:

y= −4(x−3)(2x+4)

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3 years ago
Referring to the figure, find m∠1
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<h2><u>∡1 = 150°</u></h2>
4 0
3 years ago
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