Question

A roasted turkey is taken from an oven when its temperature has reached 185°F and is placed on a table in a room where the temperature is 64°F.
(A)If the temperature of the turkey is 150°F after half an hour, what is its temperature after 45 min?

Answer 1

(b) When will the turkey cool to 100°F?

Answer 2

we can do this, but it is going to take a minute

Answer 3

ready?

Answer 4

first of all you need to work not with the temperatures, but with the difference of the temperatures
the initial difference is \(185-64=121\) and the difference after 30 minutes is \(150-64=86\)

Answer 5

are you supposed to model this as \(A_0e^{kt}\) or can we do it an easier way?

Answer 6

snap way is to say the temperature difference is
\[121\times \left(\frac{86}{121}\right)^{\frac{t}{30}}\] and then compute
\[121\times \left(\frac{86}{121}\right)^{\frac{45}{30}}\]
\

Answer 7

or
\[121\times \left(\frac{86}{121}\right)^{\frac{2}{3}}\] and then add \(64\)

Answer 8

im just lost with all of it cuz i keep getting 65 and 247. i know thats not the answer.

Answer 9

i get 85.72
http://www.wolframalpha.com/input/?i=121*%2886%2F121%29^3%2F2+%2B64

Answer 10

are you supposed to model this as \[A_0e^{kt}\] we can do it that way too

Answer 11

thats not it

Answer 12

Is it 25, if my answer is correct, I will try to help you solve it

Answer 13

is that fr part b?

Answer 14

No, a

Answer 15

https://www.webassign.net/v4cgi/student/practice.tpl?struct=CfAMAoAGDABGBaDCDoAVBSCMAnCLDxBjEHCvCYCTDKBtDqCKDlCnAtAXAOCiBEAXCbEJARDDCDDMDeBHEuCwCYBJAVBWAKEDDUDyDiBUBwBlDiDCALEUARBdDyEHCYBuEEEdCMAeDdCtCNEqEoBSEkzUDCEjCYDJARAqBNDFAaBdEsETCVEkAIEFApCsAHAXCRDPBgAYAxCqAJDOAtCMCqCJAvArEjAFDnDCAVBSEVALBCBkAAErEGzZDPEWCNEfBEDQEoBNEXEGCtBaAvyYCXDEBBBvDVBtEMCkAgEuDBAiDOEWBbBIByDqDwCiCPDGEUEFEMCOEjAQBDCOCtDWAXEEDaDOAHCJCoCcAaAOERAtCcEOEJCwBDDjCdAF&UserPass=13b1e9579404e69ae36c36b6510b0f9e

thats a website that im going by on how to do this and im just lost.

Answer 16

https://www.webassign.net/v4cgi/extra/bc_enhanced/index.tpl?asset=watch_it_player&asset_url=/bc_enhanced/salgtrig3_w_player/scolalg5_05_05_025.html&UserPass=13b1e9579404e69ae36c36b6510b0f9e

idk if you can open it

Answer 17

I can't see the link, it says I have to log in

Answer 18

ok

Answer 19

here its in the attachments.

Answer 20

I can't help :( I didn't think it would be so complicated,@Directrix , @electrokid , could you guys please help @mel11 ? Thanks :)

Answer 21

ok well thank you for everything

Answer 22

Your welcome, hopefully, I can find someone to help you

Answer 23

@jim_thompson5910

Answer 24

@jhonyy9

Answer 25

well i just got A i had to plug it into a different math website.
thank you so much though. i have been trying to work this out for over an hour.

Answer 26

thank you @satellite73 and @hedyeh99

Answer 27

so, did you get the answer?

Answer 28

yes i did. It took me an hour to figure it out.