The temperature of a freezer started at 18ºc. after cooling for a few hours, the freezer had a temperature of –12ºc. what is the difference between the new, colder temperature and the original temperature?

6°C

Step-by-step explanation:

18--12 equals 18-12 or 18+-12

18-12=6

18+-12=6

d. 8

step-by-step explanation:

the given radical expression is:

we can rewrite this as:

we express as square numbers to get;

the exponents will now cancel out to give.

the correct answer is d