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three numbers are in harmonic

pls. explain how to get this:A number x is the harmonic mean of two numbers a and b if 1/x is the mean of 1/a and 1/b. a) Write
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2. asked by hi
3. 745 views
Click on the play button to listen to the audio sample. What type of interval do you hear?(1 point) Responses harmonic second
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2. asked by What is most necessary for a coherent text to do?(
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let the harmonic mean of two numbers x and y be 9.find the harmonic mean of the four numbers x,y,2x,2y
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2. asked by john
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Use compound angle formulae to express Second harmonic i2= sin2t and the the third harmonic i3=sin3t in terms of the first
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2. asked by Stephan pultree
3. 937 views
Two numbers differ by 40 and their arithmetic mean exceeds their geometric meanby 2. What is the harmonic mean of the 2 numbers?
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2. asked by Severica
3. 1,509 views
the arithematic mean of two numbers is 15 and geometric meanis 12.Find the two numbers and find harmonic mean of these numbers.
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2. asked by Ana
3. 572 views
A tube is open only at one end. A certain harmonic produced by the tube has a frequency of 445.0 Hz. The next higher harmonic
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2. asked by Cavin
3. 1,575 views
A tube is open only at one end. A certain harmonic produced by the tube has a frequency of 500 Hz. The next higher harmonic has
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2. asked by Anonymous
3. 675 views
the arithmetic mean of two numbers exceeds the geometric mean by 3/2 and geometric mean excceeds the harmonic mean by 6/5. find
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2. asked by warnar
3. 885 views
In the set of numbers 2,3,5,7,7,8,10what is a) the arithmatic mean b) the harmonic mean c) geometric mean
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2. asked by devon
3. 454 views