SOLUTION: Write in summation notation: 25-32+39-46+53-.....-130

Question 1029512: Write in summation notation:
25-32+39-46+53-.....-130
Answer by fractalier(6550) (Show Source): You can put this solution on YOUR website!
Notice how you add seven each time and you also change the sign of each term?
You use that info to write your sum...you also need to figure how many terms there are...you can do that by seeing how any seven you need to go from 25 to 130...takes 15 more sevens...so we have...
25-32+39-46+53-.....-130 =
from n = 1 to 15 of
RELATED QUESTIONS
write arithmetic series 17+21+25+......+417 in summation... (answered by reviewermath)

Write each series in summation notation -2 +4 -8 +16... (answered by tinbar)

Write each series in summation notation. -2 + 4 - 8 + 16 -... (answered by Edwin McCravy)

Write the following in summation notation: 3/4 + 6/9 + 9/16 +12/25 +15/36 +18/49 (answered by robertb)

Write the given series in summation notation.... (answered by ikleyn)

write the series in summation notation:... (answered by amarjeeth123)

Write in summation notation... (answered by richard1234)

please help me write the series in summation notation. 3+12+21+30+39+48+57 and... (answered by solver91311)

write the series -5+5+15+25+35 using summation... (answered by josgarithmetic)