Question

My answer is C

What is the 41st term of the arithmetic sequence where a1 = 17 and a15 = -39 ? (3 points)
Answer

-147

-143

-139

-135

Answer 1

-39 = 16 + (15 - 1) d
d = -3.92
a41 = 16 + (41 -1 ) x -3.92
= 16 + 40 x ( -3.9)
= -140

Answer 2

yep i guess your answer is right

Answer 3

Hmmm I wonder how you got a number higher

Answer 4

17-160 = -143

Answer 5

it depends on the value of d, common difference I used 3.9 in my calculations

Answer 6

d=-4

Answer 7

-39 = 17 + (15 - 1) d
d=-4

Answer 8

Ohhhhhh hartnn is right im wrong a1 = 17 i used 16..opss

Answer 9

Thank you