badATalgebra
What is the sum of a 17term arithmetic sequence where the first term is 7 and the last term is 105?



This Question is Closed

badATalgebra
Best Response
You've already chosen the best response.
0
whoevers first

cwrw238
Best Response
You've already chosen the best response.
2
the formula for this is
Sum = ( n/2){ a + l)
whre n = number of terms , a = first term and l = last term

marsss
Best Response
You've already chosen the best response.
0
(1057)/16=7(common difference)
(105+7)(1057+7)/(14)=810

badATalgebra
Best Response
You've already chosen the best response.
0
833
893
913
943
these are the choices

cwrw238
Best Response
You've already chosen the best response.
2
= 8.5 *(7  105)

cwrw238
Best Response
You've already chosen the best response.
2
= 833

badATalgebra
Best Response
You've already chosen the best response.
0
833, but i got a positvie

badATalgebra
Best Response
You've already chosen the best response.
0
Thank you!

marsss
Best Response
You've already chosen the best response.
0
yes i had a mistake. sorry :)