Answer numbers 59 and 60, thansk

label Mathematics
account_circle Unassigned
schedule 1 Day
account_balance_wallet $5

Sep 28th, 2015

Thank you for the opportunity to help you with your question!

59.  an = a1 + (n-1) d

So      an –  a1 = (n-1) d

Best now to put brackets round Left side

( an –  a1) = (n-1) d

Divide both sides by d to isolate the n part

( an –  a1)/ d = (n-1) 

So n -1 =( an –  a1)/ d 

Add 1 to both sides

n = ( an –  a1)/ d  + 1       answer

60 an = a1 + (n-1) d

So      an –  a1 = (n-1) d

Best now to put brackets round Left side

( an –  a1) = (n-1) d

Divide both sides by (n-1) to isolate the d part

( an –  a1)/ (n-1)  = d


Please let me know if you need any clarification. I'm always happy to answer your questions.
Sep 28th, 2015

answer to 60 can also be written 

d =( an – a1)/ (n-1)  

Sep 28th, 2015

Did you know? You can earn $20 for every friend you invite to Studypool!
Click here to
Refer a Friend
...
Sep 28th, 2015
...
Sep 28th, 2015
Oct 16th, 2017
check_circle
Mark as Final Answer
check_circle
Unmark as Final Answer
check_circle
Final Answer

Secure Information

Content will be erased after question is completed.

check_circle
Final Answer