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vovikov84 [41]
3 years ago
8

Charles runs at a rate of 12 kilometers per hour. What is Charles' speed in meters per minute? A 12 meters per minute B 20 meter

s per minute C 120 meters per minute D 200 meters per minute
Mathematics
1 answer:
miss Akunina [59]3 years ago
5 0

Answer:not 100% sure but I thinks its c

Step-by-step explanation:

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Factorise and solve : x^3-x^2-4x+4
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(x - 1)(x - 2)(x + 2)

note that the sum of the coefficients 1 - 1 - 4 + 4 = 0

thus x = 1 is a root and (x - 1 ) is a factor

dividing x³ - x² - 4x + 4 by (x - 1)

x³ - x² - 4x + 4 = (x - 1)(x² - 4 ) (note (x² - 4 ) is a difference of squares )

x³ - x² - 4x + 4 = (x - 1)(x - 2)(x + 2)

(x - 1)(x - 2)(x + 2 ) =0

x - 1 = 0 ⇒ x = 1

x - 2 = 0 ⇒ x = 2

x + 2 = 0 ⇒ x = - 2

solutions are x = 1 or x = ± 2



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3 years ago
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Yes 2,1 is a solution of this problem
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3 years ago
The 1,840 rock concert tickets sold were twice the amount of jazz concert tickets sold
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Step-by-step explanation:

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