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math question about temperature?
My 12 year old has a math sheet of different questions. We have cam across some I need to refresh me on as well....
Here goes, thanks to anyone that can help( please dont put me down, Im just trying to help her the best way I can so she will get it right and understand)
Temperature; The expression 9/5C +32,
Where C ctands for temperature in degrees Celsius, is used to convert Celsius to Fahrenheit. If the temperature is 20 degrees Celsius, find the temperature in degrees Fahrenheit.
Please tell me how to work this out,Thanks
6 Answers
- 1 decade agoFavorite Answer
subsitute C with 20 and proceed computation
= 9/5(20) +32
= 180/5 + 32
= 36 + 32
= 68 deg. fahrenhiet
20 deg. celsius = 68 deg. fahrenheit
- Anonymous1 decade ago
Divide 9 by 5 (1.8) then multiply that by 20 (equals 36) and then add the 32. So the answer is 68 fahrenheit
C in the expression is were you put the degrees in celsius, and because there is no sign you automatically multiply it.
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- Anonymous1 decade ago
Well 9/5 = 1.8 so multiply 20 by 1.8
20 x 1.8 = 36
Then add 32 onto this.
36 + 32 = 68
so it is 68 degrees Fahrenheit.
Source(s): My brain - 1 decade ago
Fahrenheit to Celsius is 9/5C+32
Celsius to Fahrenheit is 5/9*(F-32)
Example:
0C=32F
100C=212F
9/5(0C)+32=32F
9/5(100C)+32=900/5+32=180+32=212F
5/9*(32F-32)=5/9*0=0C
5/9*(212F-32)=5/9*180=900/9=100C
So, in answer to your question;
9/5(20C)+32=180/5+32=36+32=68F
