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Over [174]
4 years ago
5

Solve using the quadratic formula

Mathematics
1 answer:
Deffense [45]4 years ago
3 0

x² + 7x/10 = 1/7

x² + 7x/10 - 1/7 = 0

Δ = b² - 4.a.c

Δ = (7/10)² - 4 . 1 . (-1/7)

Δ = 0,48999999999999994 - 4. 1 . (-1/7)

Δ = 1,0614285714285714

Há 2 raízes reais.

x = (-b +- √Δ)/2a

x' = (-(7/10) + √1,0614285714285714)/2.1

x'' = (-(7/10) - √1,0614285714285714)/2.1

x' = 0,3302565561201596 / 2

x'' = -1,7302565561201595 / 2

x' = 0,1651282780600798

x'' = -0,8651282780600797

Rounding

x' = 0,17

x'' = -0,87

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guapka [62]

Answer:

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Step-by-step explanation:

Given:

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To Find:

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Solution:

First calculate the new dimensions for new rectangle ,

Given that original length and width as 7 and 2 respectively and it is increasing by 1.5 times of the original ones

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New length =1.5 *L

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And for width,

New width=1.5 *W

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Hence New dimensions are 10.5 and 3 units .

So perimeter of new rectangle =2(New length + New breadth)

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Step-by-step explanation:

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snow_tiger [21]

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