"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
If the first term in an arithmetic sequence is 15 and the tenth term is 69. What is the fourth term in the sequence?
6 answers
how do we sub it in and evaluate
really?
You are studying the above topic and you are asking this question?
Sorry, but .....
You are studying the above topic and you are asking this question?
Sorry, but .....
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.
15+9d = 69
Now you can get d, and thus a+3d.
Is the term 33
The 10th term in an arithmetic sequence is 8 and the 4th term is -4. Determine the first term a.