What is the common difference of a 57–term arithmetic sequence where the first term is –25 and the sum is 17,727?

Question

anonymous · Answer

17727= 57/2 ((2*-25)+ (57-1)d) now solve for d

anonymous · Answer

12?

anonymous · Answer

yup

anonymous · Answer

can you answer another?

anonymous · Answer

ill try me best :)

anonymous · Answer

What is the sum of a 14–term arithmetic sequence where the last term is 30 and the common difference is –5?

anonymous · Answer

do you have answer choices??

anonymous · Answer

if there is 875 in your choices then thats your answer

anonymous · Answer

thanks but how did you get that?

anonymous · Answer

Truthfully, i did NOT get that off the top of my head, there is websites online that give you the answers, and this one you need scientific calculator and you good. If you have any algebra problems you need help with you go to any of these, http://www.myalgebra.com/ or http://www.wolframalpha.com/input/?i=8%2Fx%3D5%2F4x%2B1

anonymous · Answer

so what did you input?

anonymous · Answer

if you copy and paste your quesion on google yahoo answers have it. :) http://answers.yahoo.com/question/index?qid=20110424195136AAH72og Im not smart dude

anonymous · Answer

I just started home school and i have a lot of ways to get answers real quick with out doing them :)

anonymous · Answer

cheater