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Vlad1618 [11]
3 years ago
6

Help with these 3 please

Mathematics
1 answer:
marishachu [46]3 years ago
8 0
The first is -35
The second is 4
The third is -7
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Find the vertex of the parabola whose equation is y=-2x^2+8x-5. (2,27), (2,19), (2,3)
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Vertex of the parabola is (2,3)

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The parabola is a negative, it opens down and the maximum place it can reach is 3 (y).

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Kevin has 44 marbles. 34 of them drop. 89 get donated to him. how many marbles does Kevin have now?
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Step-by-step explanation:

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How many gallons of a 80​% antifreeze solution must be mixed with 100 gallons of 20​% antifreeze to get a mixture that is 70​% a
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How many gallons of a 80​% antifreeze solution must be mixed with 100 gallons of 20​% antifreeze to get a mixture that is 70​% antifreeze.

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2-3= -1
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