the aritthmetic mean of numbers is 13/2and their geometric mean is 6.find their harmonic mean
sneha284:
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a+b/2 = 13/2 b = 13-a
and. ab = 6² ab = 36
a(13-a) = 36
13a-a²= 36
a² - 13a + 36 = 0
a = 9 or 4
solving we got.
b = 4 or 9
HM = 2ab/a+b
= 2*4*9/13
= 72/13.
and. ab = 6² ab = 36
a(13-a) = 36
13a-a²= 36
a² - 13a + 36 = 0
a = 9 or 4
solving we got.
b = 4 or 9
HM = 2ab/a+b
= 2*4*9/13
= 72/13.
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mark brainliest
Answered by
1
So the answer will be 72/13
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i think its the 2 question. or sometimes it is 1marks question. so follow the this formula
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