Question #250707
find the common difference of the following
a. -9,-6,-3,0
b. 4,8,12,16,20
c. 6,13,20,27
d. -160,-80,-40,-20
e. 1/16,1/8,1/4.1/2
1
Expert's answer
2021-10-14T12:23:43-0400

The common difference is given by an+1an For question a., the common difference is given by 6(9)=3For question b., the common difference is given by 84=4For question c., the common difference is given by 136=7For question d., the common ratio is given by 80160=12For question e., the common ratio is given by 18116=2\text{The common difference is given by $a_{n+1}-a_n$ }\\ \text{For question a., the common difference is given by $-6-(-9)=3$}\\ \text{For question b., the common difference is given by $8-4=4$}\\ \text{For question c., the common difference is given by $13-6=7$}\\ \text{For question d., the common ratio is given by $\frac{-80}{-160}=\frac{1}{2}$}\\ \text{For question e., the common ratio is given by $\frac{\frac{1}{8}}{\frac{1}{16}}=2$}\\


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