It'd be easier to do #18 if y ou were to break it up:
14* (first term + 14th term)
Sum from n=1 to 14 of n = S = ---------------------------------
14 2
14(1+14)
= ---------------- = 7(15) = 105
2
The sum of twice that is 210. The sum of "1 from n=1 to n=14" is just 14.
The final sum is 210 + 14 = 224 (answer)
Answer:
From what i know your answer will be a.
To find three numbers between -0.62 and -0.61 you will add a number in the hundredth place.
Answer:
288 × 60=17280 feet
Step-by-step explanation:
