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lara31 [8.8K]
3 years ago
14

The temperature at 4 a.m. was -13 °F. The temperature was rising at a steady rate of 5°F an hour. At what time will the temperat

ure be 12°F ?
Mathematics
2 answers:
yan [13]3 years ago
8 0

Answer: 9 am


Step-by-step explanation:

5am= -8f

6am= -3f

7am= 2f

8am= 7f

9am= 12f


Whitepunk [10]3 years ago
3 0

the time that i got was at 6;00

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Tcecarenko [31]

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Explanation:

The parabola opens down, forming a "frowny face" in a way (just without the eyes). Or you can think of it as a hill or mountain. This means that the vertex (-3,-6) is at the top of that mountain. It's the highest point of that parabola.

The range is the set of all possible y values. We see that y = -6 is the largest it can get. So y = -6 or y is smaller than this. We would then write y \le -6 to describe all the possible y values.

Therefore, the range is \{y \in \mathbb{R}\ | \ y \le -6\}

This translates to "y is a real number such that y is -6 or smaller".

So the second answer you wrote is close, but you forgot the "or equal to" portion of the inequality sign.

See below for a visual example of what's going on.

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Simplify
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3 years ago
What is the answer to what X is?
solmaris [256]

Answer:

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Step-by-step explanation:

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