If 3 harmonic means are inserted between -1/2 and 1/18 what is the first harmonic mean?
a. 1/3
b.1/8
c. 1/13
d. 1/18
(with solution)

Answers

Use the formula:
an=a1+(n-1)d
18=-2+(5-1)d
18=-2+4d
Combine the similar terms:
18+2=4d
20=4d
Divide both sides by 4:
d=5

To find the second mean:
a2=a1+d
a2=-2+5
a2=3

Since harmonic sequence is a sequence in such reciprocals will form an arithmetic sequence:
The Second mean is
A.1/3
Second harmonic mean is 1/36

The three harmonic means are 1/27,1/36, and 1/45

tanu ngin mo sa teacher mo

limang puntos. salamat

i dont know the answer

Step-by-step explanation:

i dont know the answer

D. Geometric Mean

Step-by-step explanation:

12 x 2 = 24

24 x 2 = 48 and so on

I can't explain Pero geometric Po yang sequence yan

bat ang gulo d alam ang sasagutan ko

answer:

1/36

Step-by-step explanation:

yan alam ko welcome beh

1&3 are true and 2 are false

Harmonic is the reciprocal of Arithmetic. The answer is a.1/3
If 3 harmonic means are inserted between -1/2 and 1/18 what is the first harmonic mean?   a. 1/3 b.1


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