Answer:
Step-by-step explanation:
<u>Sum of n terms formula:</u>
<u>Solving for n</u>
- 3480 = 1/2n(9 + 165)
- 3480 = 87n
- n = 3480/87
- n = 40
Answer:
Hi Christine
Step-by-step explanation:
Ms. Paik would be mad, wouldn't she?
5+4+2=11 or go like this 20-17=3×3=9+2
My Spanish isn't that great but I think you're looking for 18
The temperature after 7 hours is -2° F
<em><u>Explanation</u></em>
At 3 p.m the temperature was 12° F
Then , the temperature began to drop 2° F every hour.
So, the total temperature dropped in 7 hours will be:
° F
Now, for finding the temperature after 7 hours, we need to <u>subtract the "temperature dropped" from the "initial temperature"</u>.
Thus, the temperature after 7 hours
° F