# Thread: inequality problem and inequalities Help Please!

1. ## inequality problem and inequalities Help Please!

Hello to all friends of the mathhelpforum I'm new in this community. Thank you!

I would like to help me with this exercise, I have to deliver today :

The temperatures in a 24 hour period between -4 ° F and 23 ° F, What was the variation in Celsius? (use F = 9/5 C +32)

2. ## Re: inequality problem and inequalities Help Please!

use the given formula to convert temperature from Farenheit to Celsius ..then subtract it is easy.

3. ## Re: inequality problem and inequalities Help Please!

First, I'm just going to talk about 1 of them say $23^0 F$
You will have to rearrange the equation either before or after you substitute in 23 for F (to make C the subject)

Since you have 2 temperatures to change from Farenheit to Celsius it makes more sense to rearrange the equation to make C the subject first.

F = 9/5 C +32
times both sides by 5 (to get rid of the fraction)
...
5F = 9C+160
Can you do it from here?

Once you make C the subject you can substitute in the 2 values of F (one at a time ) and get the answer that you seek easily.

4. ## Re: inequality problem and inequalities Help Please!

Originally Posted by Melody2
First, I'm just going to talk about 1 of them say $23^0 F$
You will have to rearrange the equation either before or after you substitute in 23 for F (to make C the subject)

Since you have 2 temperatures to change from Farenheit to Celsius it makes more sense to rearrange the equation to make C the subject first.

F = 9/5 C +32
times both sides by 5 (to get rid of the fraction)
...
5F = 9C+160
Can you do it from here?

Once you make C the subject you can substitute in the 2 values of F (one at a time ) and get the answer that you seek easily.
Thanks you!

Originally Posted by MINOANMAN
use the given formula to convert temperature from Farenheit to Celsius ..then subtract it is easy.
Thanks you!