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nordsb [41]
3 years ago
9

Apply subtraction of intenges to a real world situation

Mathematics
1 answer:
luda_lava [24]3 years ago
5 0

you have 59 coconuts and you only want 39, you can do 59-39 to see how many you need to get rid of. :)


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The perimeter of a rectangle is 36m. If its length is increased by 1m and the width is increased by 2m, its area will increase b
maw [93]

Answer:

  80 m^2

Step-by-step explanation:

The given information lets you write two equations involving length (x) and width (y).

  • 2(x +y) = 36 . . . . the perimeter is 36 m
  • (x+1)(y+2) -xy = 30 . . . . increasing the length and width increases area

The second of these equations simplifies to another linear equation, giving a system of linear equations easily solved.

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Dividing the first equation by 2 gives

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and subtracting this from the above equation gives ...

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Then

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The area of the original rectangle is xy = 10·8 = 80 m^2.

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