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aliina [53]
3 years ago
14

Don’t mind the pencil writing

Mathematics
1 answer:
vesna_86 [32]3 years ago
8 0

Answer:

Length = 22 cm

Width = 4 cm

Step-by-step explanation:

Area = 88 cm²

Length = x + 7

Width = x - 11

Area of rectangle = length*width

Therefore:

(x + 7)(x - 11) = 88

x(x - 11) +7(x - 11) = 88

x² - 11x + 7x - 77 = 88

Add like terms

x² - 4x - 77 = 88

x² - 4x - 77 - 88 = 88 - 88

x² - 4x - 165 = 0

Factorize

x² - 15x + 11x - 165 = 0

x(x - 15) +11(x - 15) = 0

(x + 11)(x - 15) = 0

x = -11 or x = 15

Let's use the positive number.

Therefore:

Length = x + 7

Plug in the value of x

Length = 15 + 7 = 22 cm

Width = x - 11 = 15 - 11 = 4 cm

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Step-by-step explanation:

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3 0
2 years ago
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vredina [299]
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so answer is 2nd one
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2 years ago
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5 0
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Hope this helps :)
6 0
3 years ago
Help plz with this
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He is congruent to the term from the product but B is the wrong answer but I don’t know about secrecy is might be the answer so just put d
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