Answered

If three geometric means are inserted between -9 and -729, find the second geometric mean

A. -27
B. -81
C. -243
D. 54

Sagot :

LYN3214viz

Answer:

B,-81

Step-by-step explanation:

Geometric mean between 9 and 729=√9×729=√81×81=81 .

(just saw the answer to someone)

Djc112906viz

Answer:

B. - 81 using formula an=a1 · r^n-1

Step-by-step explanation:

Hope it helps

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