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3 years ago

Put each equation in standard form and state the values of a, b and c.

Mathematics

1 answer:

hichkok12 [17]3 years ago

6 0

1) a = 2, b= 3, c=2,

2) x^2 -2x-4 (a = 1, b=-2, c =-4)

3) x^2+x+3 (a,b = 1, c = 3)

4) 7x^2+8x-4 (a=7, b=8, c=-4)

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on Monday joe bought 10 cups of coffee and 5 doughnuts for his his office at the cost of $16.50. It turns out that the doughnuts

AfilCa [17]

X= be coffee

Y=be donuts

Set up equations

10x+5y=16.50

5x+10y=14.25

Now multiply first equation by -2 to get a negative

(-2)10x+5y(-2)=16.50(-2)

-20x-10y=-33

Now put both equations to solve for x

-20x-10y=-33

5x+10y=14.25

___________

-15x. = -18.75

Now divide -15 bith sides to get x alone

X= -18.75/-15

X= 1.25

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2 years ago

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viktelen [127]

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