G위로

This page lists questions and answers that were posted by visitors named G위로.

Questions

The following questions were asked by visitors named G위로.

Answers

The following answers were posted by visitors named G위로.

8 - 5 is 3 ie 3 is the common difference
4 years ago
a = - 8 Ratio of the 7th and 9th term is a + 6d : a + 8d = 5:8 8(a+6d) = 5(a+8d) 8a+48d=5a+40d 48d - 40d = 5a + 8a 8d = -3a d = -3a÷8 d = -3×(-8)÷8 = 3 Therefore common difference = 3
4 years ago