if three Arithmetic means are inserted between -4 and 8, what is the third arithmetic mean?
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if three Arithmetic means are inserted between -4 and 8, what is the third arithmetic mean?
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Answer:
5
Step-by-step explanation:
-4 + 4d = 8
4d = 12
d = 3
-4, -1, 2, 5, 8 is the sequence
-1, 2, 5, is the arithmetic mean between -4 and 8
5 is the third arithmetic mean