3 years ago

Please I need help with this

1 answer:

3 0

Divide fractions by multiplying the first number by the reciprocal of the second.

2ay*15y= 30ay^2

5y^3*4a=20ay^3

(30ay^2)/(20ay^3)=3/(2y)

Final answer: 3/(2y)

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gavmur [86]

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Graph A

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$y = {x}^{2} - 6x - 7 \\ plug \: y = 0 \\ {x}^{2} - 6x - 7 = 0 \\ {x}^{2} - 6x + 9 = 7 + 9 \\ (x - 3)^{2} = 16 \\ (x - 3) = \pm 4 \\ x = 4 + 3 \: or \: x = - 4 + 3 \\ x = 7 \: or \: x = - 1$

Its mean graph should intersect x axis at x = 7 and x = - 1. This everything is satisfied by graph A.

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3 years ago

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