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laila [671]
3 years ago
7

The sum of two trinomials is 7x2 - 5x + 4. If one of the trinomials is 3x2 + 2x - 1, then what is the other trinomial?

Mathematics
1 answer:
Flura [38]3 years ago
7 0

Answer:   4x^{2} - 7x + 5

Step-by-step explanation:

Let y be the number

3x^{2} +2x - 1 + y = 7x^{2} - 5x + 4

                       y = 7x^{2} - 5x + 4 - 3x^{2} - 2x + 1

                       y = 4x^{2} - 7x + 5

                     

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The length of a rectangle is seven more than double the width. If the perimeter is 22 inches find the dimensions
lubasha [3.4K]

Answer:

width = 1 1/3 inches

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Step-by-step explanation:

let 'w' = width

let '7+2w' = length

P = 2l + 2w

22 = 2w + 2(7+2w)

22 = 2w + 14 + 4w

8 = 6w

w = 4/3 or 1 1/3

substitute 1 1/3, or 4/3, to find length:

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3 years ago
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3 years ago
Max measures the diagonal of a square room to be 32feet find the perimeter and area of the room round answers to the nearest ten
Rasek [7]
Hello!

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The answer is 90.4

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