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find the roots of the parabola given by the following equation. 2x^2+ 5x - 9 = 2x
explain and show all your work.

Step-by-step explanation:

2x² + 5x - 9 = 2x

- 2x - 2x

_____________

2x² + 3x - 9

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$8

step-by-step explanation:

it is pretty much backwards.

you take the 4x2 multiply that, and that is = $8

mr. flanders’ class sold 47 doughnuts and   mr. rodriquez’s class sold 38 cartons of milk

step-by-step explanation:

let x be the number of doughnuts sold by mr. flanders’ class and y be the number of cartons sold by mr. rodriquez’s class.

1. together, the classes sold 85 items, then

x+y=85.

2. both classes earn earned $104.49 for their school. if doughnuts were sold for $1.35 each, then x doughnuts costed $1.35x. if cartons of milk were sold for $1.08 each, then y cartons costed $1.08y. hence,

1.35x+1.08y=104.49.

3. solve the system of two equations: