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The first term of an arithmetic sequence is -3 and the fifteenth term is 53. What is the common dif...
4 months ago
Q:
The first term of an arithmetic sequence is -3 and the fifteenth term is 53. What is the common difference of the sequence? 14/13 25/7 4
Accepted Solution
A:
[tex]a_1=-3 \\ a_{15}=53 \\ \\ d= \frac{53-(-3)}{15-1}= \frac{56}{14}=4[/tex]
The answer is d=4