Question

What is the sum of a 14-term arithmetic sequence where the last term is 30 and the common difference is -5?
What is the common difference of a 57-term arithmetic sequence where the first term is -25 and the sum is 17,727?

Answer 1

-35 is the answer to the first question

Answer 2

What is the common difference of a 43-term arithmetic sequence where the first term is -13 and the sum is 9,374? (1 points)
A) 11
B) 11.5
C) 12
D) 12.5
6.
What is the common difference of a 57-term arithmetic sequence where the first term is -25 and the sum is 17,727? (1 points)
A) 11
B) 11.5
C) 12
D) 12.5
7.
What is the sum of a 14-term arithmetic sequence where the last term is 30 and the common difference is -5? (1 points)
A) 875
B) 812.5
C) 455
D) 422.5 these r the questions and possible answers