dmezzullo
[2.08] The formula for degrees Celsius is: C = 9 over 5 (F − 32), where F stands for degrees Fahrenheit.
Part 1: Solve the formula for F. Show all steps.
Part 2: Determine how many degrees Fahrenheit 4 degrees Celsius is.
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dmezzullo
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show how to do every step
dmezzullo
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@AriPotta
dmezzullo
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@swissgirl
AriPotta
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i thought it was 5/9?
dmezzullo
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it is
AriPotta
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but you wrote 9/5. i'm just making sure
AriPotta
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idk :/ it's probably 9/5, nvm
swissgirl
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can u draw the equation cuz I so dont follow it
AriPotta
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|dw:1352686957842:dw|
swissgirl
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ok gotcha
dmezzullo
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|dw:1352687047882:dw|
swissgirl
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Now our first step would be to isolate our F
AriPotta
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it's 5/9 now? ugh
swissgirl
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So first we divide the 5/9
\(\large C*\frac{9}{5} = \frac{5}{9}*\frac{9}{5} (F-32)\)
\(\large \frac{9}{5}C=F-32\)
Then we add 32 to both sides:
\(\large \frac{9}{5}C+32=F-32+32\)
\(\large \frac{9}{5}C+32=F\)
And there you go there is your formula for F
swissgirl
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ohhh whoops I meant multiply instead of divide
dmezzullo
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this didnt come from google right?
swissgirl
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Ok that first line should say:
So first we multiply both sides by 9/5
swissgirl
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hahaha Noooooooooo I just did it this second. I taught grade 11 HS math last year lol
swissgirl
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All I did was isolate the F. Its a basic tool which is needed quite often in algebra
swissgirl
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The way i would suggest you learn how to isolate is by starting off with simpler functions such as y=3x+4 And try to isloate the x.
swissgirl
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Now Part B all its asking for you is to find out what 4 degrees Celsius is in Faranheight.
Now which equation would you use?
dmezzullo
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idk
swissgirl
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Ok the equation we just figured out
swissgirl
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We would like to know what F=Fahrenheit equals when c=4
\(\Large F=\frac{9}{5}C+32\)
So we plug in C=4
\(\Large F=\frac{9}{5}(4)+32\)
Ok now you solve the rest
dmezzullo
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No
swissgirl
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\( \large F=\frac{36}{5} +32 =39.2\)
dmezzullo
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tyvm