Question

Algebra 2 :)

Answer 1

http://assets.openstudy.com/updates/attachments/537f4b2be4b098b1daf4c2b9-bookworm1156-1400851289112-mathproblem2.png

Answer 2

What function accurately represents the sine curve for red light?

Answer 3

@jim_thompson5910

Answer 4

what is the period of this trig function?

Answer 5

um idk:(

Answer 6

Is it pi/320?

Answer 7

the period is T = 640 since the curve repeats itself every 640 nm

use the formula T = 2pi/B


T = 2pi/B
640 = 2pi/B
B = ???

Answer 8

640/ 2=320

Answer 9

is the answer D?

Answer 10

yes you should end up with B = pi/320

Answer 11

so that's why the function is \[\Large f(x) = \sin\left(\frac{\pi}{320}x\right)\]

Answer 12

That makes sense! Thank you:)

Answer 13

The temperature of a chemical reaction ranges between 40 degrees Celsius and 180 degrees Celsius. The temperature is at its lowest point when t = 0, and the reaction completes 1 cycle during a 12-hour period. What is a cosine function that models this reaction?

f(t) = 70 cos 12t + 110
f(t) = 110 cos 12t + 70
f(t) = −70 cos pi over 6t + 110
f(t) = −110 cos pi over 6t + 70

Answer 14

I got C?

Answer 15

which is correct.

Answer 16

Yes! Thanks again :)

Answer 17

Caroline has a rock stuck in her Jeep's tire. If the tire has a 48-inch diameter, how far does the rock travel in 94° of rotation?

188 pi over 15
47 pi over 90
24π
47π

Answer 18

Um I got A?

Answer 19

hopefully you used

s = (x/360)*2*pi*r

s = arc length
x = angle in degrees
r = radius

I'm getting 188pi/15 = 39.374627924992 as well

Answer 20

Yup:) O course!

Answer 21

What are the amplitude, period, phase shift, and midline of f(x) = 7 cos(2x + π) − 3?

What are the amplitude, period, phase shift, and midline of f(x) = 7 cos(2x + π) − 3?

Amplitude = −3; period: π; phase shift: x = negative pi over 2; midline: y = 3
Amplitude: 7; period: π; phase shift: x = negative pi over 2; midline: y = −3
Amplitude: 7; period: 2π; phase shift: x = pi over 2; midline: y = 3
Amplitude: −3; period: 2π; phase shift: x = pi over 2; midline: y = −3

Answer 22

B?

Answer 23

correct again, you're on a roll

Answer 24

hahaaha!! Thanks <3 for all you're help!