Im really confused: A scientist records a temperature of 234.566°C in an experiment. The temperature then falls 48.01°C. What was the temperature after it fell?
A.186.556°C

B.
186.56°C

C.
186.557°C

D.
186.57°C

Question

Im really confused: A scientist records a temperature of 234.566°C in an experiment. The temperature then falls 48.01°C. What was the temperature after it fell?
 	 A.186.556°C
 
 B.
186.56°C
 
 C.
186.557°C
 
 D.
186.57°C

accessdenied · Answer

Do you know about significant figures?

anonymous · Answer

yea

accessdenied · Answer

We want to make this subtraction: 
   234.556°C  -  48.01°C
That part should be evident.  The more important part is using the properties of significant figures through addition.

anonymous · Answer

Oh! Alright! Thank you!

accessdenied · Answer

234.566 - 48.01
I mistakenly typed 556 rather than 566.
Anyways, you get  186.556 by subtracting.  But you have to use the lowest decimal place value, so rounded to the hundredths place.

accessdenied · Answer

No problem!  :)