Question 1 In an arithmetic series, the 19th term is −138 and the 9th term is −58 What is the first term and the common difference? First term=Expected answer: Common difference=Expected answer: Save answer Score: 0/2 Feedback for . Hide feedback.The feedback has changed.This feedback is based on your last submitted answer. Save your changed answer to get updated feedback. Or, you could: ⤺ Go back to the previous part There's nothing more to do from here. Advice To find the common difference d we note that the 19th term is −138 and the 9th term is −58 so we can find the common difference d by noting −58−−138=(9−19)×d, hence common difference =−8 It is then straightforward to find the first term a1 by substituting the common difference back into either of our given terms. For example, we know −138=a1+(19−1)×−8, hence a1=6 Score: 0/2 Total 0/2 Move to the next questionTry another question like this oneReveal answers