I believe it's the first option. Hope this helps.
Answer:
C
Step-by-step explanation:
look up rules of multiplying radicals.
You can multiply the radicands (the number inside the square root) then take the square root of the new number.
3*21 = 63
Factor 63 into 3*3*7
Pull out 3^2 from inside the square root
leaves you with 3sqrt7 or answer C
It’s 101 because 72 and -29 have a difference of 101
Answer:
Step-by-step explanation:
We have been given that at midnight, the temperature was 
. At noon, the temperature was 
.
Since our temperature has increased to 23 degree Fahrenheit from -8 degree Fahrenheit, we can represent this increase in temperature as:
Therefore, the expression represents the increase in temperature.
