The equation below shows the relationship between the temperature in degrees Celsius, C, and degrees Fahrenheit, F: C = 5 over 9(F − 32) Which of the following formulas correctly solves for F? F = 9 over 5C + 32 F = 9 over 5C − 32 F = 9C + 32 over 5 F = 9C − 32 over 5
@zepdrix
I'd suggest that you actually solve the given equation for F. To eliminate fractions, mult. both sides of the given eq'n by 9. Show your results.
That's the part I'm having trouble with...
surely you can multiply that C by 9. Try it. Your result?
I stink at math :/ This I so confusing... :(
Such statement do not help you and do not help me. You have seen this math before and should have little or no trouble with it.
The given equation begins with C. Multiply that by 9.
\[\frac{ 9 }{ 5 } \div C=?\]
I meant the multiply sign
I gave you C and asked that you multiply it by 9. Try again.
If I give you 5 and ask you to mult. that by 3, you'd write 3(5) = 15. If I give you C and ask you to mult. that by 9, you'd write ... what?
3(C)
but wouldn't 9 times c be 9c? Why the 3?
Oh sorry I thought I put 9
C = (5 over 9)(F − 32) You have mult. that C by 9 and gotten 9C. Now multiply that (5 over 9) by 9. Your result? (You have to keep that (F-32) as part of the resulting equation.)
Left side: 9C Right side: 9(5/9)(F-32) Please simplify this.
Please simplify:\[9(\frac{ 5 }{ 9 })(F-32)\]
Would it be 5?
5C
The 9 cancels out, yes. That leaves you with 5(F-32). You cannot drop or forget the (F-32). You began with C = 5 over 9(F − 32) and now you have 9c=5(F-32). Divide both sides by 5, so that you'll have (F-32) on the right side. please show your work.
Left side: divide 9C by 5. Type out your result.
|dw:1475114937644:dw|
|dw:1475115045167:dw|
I need your response, very soon, if y ou want me to continue here.
You would divide and it would become 6.4 right>?
Divide 9C by 5. All you have to do is retype this into one fraction.
Type 9C in the numerator of your fraction and 5 in the denom.
9/5C
9C/5 would be better. Now divide 5(F-32) by 5.
6.4?
You have [ 5 times (F-32) ] and need to divide this whole expression by 5. Try again. Do NOT change or drop the (F-32) part.
What?
I can't type that any clearer than I already have. Think about this and then answer my question.
Simplify \[\frac{ 5(F-32) }{ 5 }\]
As I said before, leave the (F-32) part alone. Focus on the 5/5. Your result?
Just the 5/5 which would cancel it out. You have F-32 keft?
yes.
so now you have\[\frac{ 9C }{ 5 }=F-32\]
Your goal is to solve for F. You must isolate F on the right side of your equation. How would you do this? Solve for F, please.
add 32
add 32 to both sides. Do this now, please.
How would you add it to your fraction???
Write 9C/5 and then write "+32" after it. Write out your whole new equation now, please.
9C/5 + 32 = F
Right. That's your formula. Does it match any of your answer choices?
Brooke?
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