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Studentka2010 [4]

2 years ago

11

HELP ASAP WITH THIS QUESTION

2 answers:

Natalija [7]2 years ago

4 0

12 -2x < 16
First, subtract 12 from both sides.
-2x < 16 - 12
-2x < 4
Divide both sides by -2
x > -2 (you switch the < sign with > when divided by a negative).

Because it is not greater than/less than or equal to, it is an open circle at -2. Any number that is greater than -2 means it's shaded to the right, the answer's B.

vova2212 [387]2 years ago

3 0

B.
Because the answer is x>-2 so it is an open circle
The other person's explanation is correct

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Step-by-step explanation:

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t = 7 and the temperature (y) = 29° C

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$29= 7.5 sin (\frac{2 \pi}{365}*7 -C) + 21.5$

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$\frac{29-21.5}{7.5}= sin (\frac{14 \pi}{365} -C)$

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$C= (\frac{28 \pi- 365 \pi}{730} )$

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$y = 7.5 sin ( \frac{2 \pi}{365}*31+ \frac{337 \pi}{730})+ 21.5$

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