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OpenStudy (anonymous):
Find the three arithmetic means between 7 and 21.
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OpenStudy (anonymous):
10.5,14,17.5 ?
Parth (parthkohli):
The arithmetic mean of 7,21 (7 + 21)/2 28/2 14 Arithmetic mean of 7 and 14 (7 + 14)/2 21/2 10.5 Arithmetic mean of 14 and 21. (21 + 14)/2 35/2 17.5 So the three arithmetic means are 10.5,14 and 17.5
OpenStudy (anonymous):
I have one last qeustion Find the 6th term of the sequence with t1 = -4 and tn = 5^tn-1
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