Question

Identify the 31st term of an arithmetic sequence where a1 = 26 and a22 = -226. (2 points)

Answer 1

-334

-274

-284

-346

Answer 2

a = 26
a+ 21d=-226
26 +21d=-226
21d = -226 -26
21d = -252
d = -252/21
d= -12
now look at this one
a+ 30d
26 +30(-12) =-334 is the correct answer

Answer 3

\[a_1=a=26\]\[a_{22}=a+21d=-226\]\[a_{22}=26+21d=-226\]
\[d=-252/21\]\[d=-12\]\[a_{31}=a+30d=26+30(-12)=?\]

Answer 4

thanks so much both

Answer 5

haha

I hope she will learn now.

Answer 6

ill give you a medal this time since you answered last time and didnt get one

Answer 7

yes she is correct