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Lina20 [59]
3 years ago
6

Determine the direction that this parabola opens y=-5x^2-10x-15

Mathematics
1 answer:
OLga [1]3 years ago
8 0
The parabola opens down.

If the a value is positive it opens up. If it's negative it opens down. If it is 0, it's not quadratic. The a value here is -5
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ycow [4]
Hey there :)

Before translating the sentence into mathematics, let r represent 'a number'

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The difference between them = 5r - 2r 

* Your equation 
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* Solving the equation 
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weqwewe [10]
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4 0
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zaharov [31]

To do solve this you must isolate x. First subtract 16 to both sides (what you do on one side you must do to the other). Since 16 is being added to x, subtraction (the opposite of addition) will cancel it out (make it zero) from the left side and bring it over to the right side.

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7 0
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Read 2 more answers
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