Asked by Anonymous

If the first term in an arithmetic sequence is 15 and the tenth term is 69. What is the fourth term in the sequence?
Answered by Reiny
"first term in an arithmetic sequence is 15" ---> a=15

"the tenth term is 69" ---> a+9d = 69

sub in a = 15 to find d
then evaluate
a + 3d
Answered by Anonymous
how do we sub it in and evaluate
Answered by Reiny
really?
You are studying the above topic and you are asking this question?
Sorry, but .....
Answered by Steve
by now I'm sure you have figured out what it means to substitute a value, but just in case, that gives you

15+9d = 69

Now you can get d, and thus a+3d.
Answered by Anonymous
Is the term 33
Answered by Anonymous
The 10th term in an arithmetic sequence is 8 and the 4th term is -4. Determine the first term a.
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