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xeze [42]
2 years ago
8

Nikki M and Cardi B are debating about which set of numbers would best describe the temperature in New York on any given day Nik

ki and says integers would be the best choice but Cardi B says rational numbers would be better who has the better choice explain
Mathematics
1 answer:
kompoz [17]2 years ago
7 0

Cardi B

Step-by-step explanation:

It is decreasing in the time interval 0 < x < 2 hours.

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  1. 5 seconds

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Step-by-step explanation:

Both of these questions can be solved the same way. Each quadratic gives height as a function of time. You're interested in the time at which the height is zero. Factor the quadratic and find the positive value of x that makes the relevant factor be zero.

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<em>Additional comment</em>

The "zero product rule" tells you a product will be zero if and only if one or more of the factors is zero. When a factored quadratic (or any other polynomial) is zero, one of the factors must be zero. If the factor is of the form (ax+b), then the corresponding solution is ...

  ax+b = 0   ⇒   ax = -b   ⇒   x = -b/a

That is, once you have the factored form, you can write the solutions "by inspection."

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