anonymous
  • anonymous
ALGEBRA 2 WILL GIVE MEDAL
Trigonometry
  • Stacey Warren - Expert brainly.com
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katieb
  • katieb
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anonymous
  • anonymous
What are the amplitude, period, and midline of the function? Amplitude: 4; period: 2π; midline: y = −1 Amplitude: 8; period: 2π; midline: y = 1 Amplitude: 8; period: π; midline: y = −1 Amplitude: 4; period: π; midline: y = 1
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anonymous
  • anonymous
Use graph
anonymous
  • anonymous
Amplitude is half of the distance between the highest lowest points. The top and bottom points are 3 and -5, respectively. The distance between is 8, so the amplitude is half of 8, or 4.

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anonymous
  • anonymous
so b?
anonymous
  • anonymous
First, we have to determine what the other 2 are. And second, B says that the amplitude is 8, so it can't be B.
anonymous
  • anonymous
Oh ok so
anonymous
  • anonymous
It will be A or D
anonymous
  • anonymous
D
anonymous
  • anonymous
Let's figure out what the period is. The period is the distance between the point on any wave and the same point on another wave. Kinda complicated way to say it, so a simpler way is just the distance between the tops of the waves. What is the horizontal difference between the top of two of the waves?
anonymous
  • anonymous
4
anonymous
  • anonymous
The distance of the red line in http://prntscr.com/7p9t23
anonymous
  • anonymous
3
anonymous
  • anonymous
Are you sure? Look at the number on the line.
anonymous
  • anonymous
Its 4
anonymous
  • anonymous
The amplitude is 4, but we're talking about the period here
anonymous
  • anonymous
Thats 3???
anonymous
  • anonymous
OH
anonymous
  • anonymous
Remember, it's horizontal distance, not vertical
anonymous
  • anonymous
2!
anonymous
  • anonymous
2 what? There's something after the 2.
anonymous
  • anonymous
Pi
anonymous
  • anonymous
Yeah, it's \(2\pi\) So it has amplitude of 4 and period of \(2\pi\). Which choice is that?
anonymous
  • anonymous
A
anonymous
  • anonymous
can u help me w a few more
anonymous
  • anonymous
Correct :)
anonymous
  • anonymous
Sure, I can help with a few more, just tag me in a separate question. :)

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