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boyakko [2]
3 years ago
15

Jane multiplies her number by three and subtracts 2.

Mathematics
1 answer:
katrin [286]3 years ago
3 0

Answer:

Let the number they chose be 'x'.

Result of Jane = 3x -2

Result of Elliot = 2x+3

Given that,

The product of their result = 110

or, (3x-2)(2x+3) = 110\\or, 6x^{2} +9x-4x-6 = 110\\or, 6x^{2} +5x - 6 = 110\\or, 6x^{2} +5x - 6-110 = 0\\\\or, 6x^{2} +5x - 116 = 0\\or, 6x^{2} +29x - 24x - 116 = 0\\or, x (6x +29) -4(6x+29) = 0\\or, (x-4)(6x+29) = 0\\i.e. x=4 or x=\frac{-29}{6} \\So,~ the ~number ~they~ chose~was ~either ~4 ~or ~\frac{-29}{6}

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hope this helps





3 0
3 years ago
Help asap do all show work
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y=-x

slope for perp line = 1

2y=-x+6

y=-1/2x +3

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15.

i don’t wanna do all sorry it’s a lot of work so i’ll tell u how to do it instead. first write it in slope intercept form which is

y-y1=m(x-x1)

it’s parallel which means it shares the same slope. if it’s perpendicular it would be opposite reciprocals so for -3/2 the perp slope would be 2/3.

the line is

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we distribute the 3/4 so it’s now

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then we subtract the 1

y=3/4x-4 is the equation boom done

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{ \red{ \bold{option \: (c)}}}

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