Saturday

December 20, 2014

December 20, 2014

Posted by **hi** on Wednesday, November 9, 2011 at 6:07pm.

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 an equation to represent the harmonic

mean of a and b.

b) Determine the harmonic mean of 12 and 15.

c) The harmonic mean of 6 and another

number is 1.2. Determine the other number.

Connecting

Problem Solving

Reasoning and Proving

Reflecting

Representing Selecting Tools

Communicating

184 MHR

**Answer this Question**

**Related Questions**

math - In the set of numbers 2,3,5,7,7,8,10 what is a) the arithmatic mean b) ...

math - Does anyone know how to explain mean, median, mode and range mean?? mean-...

Math - Find harmonic mean and geometric mean for numbers 120, 130,145

algebra - find five numbers with a mean of 16, a median of 15 a mode of 21 and a...

geometry - a salesperson drove 238,259,87,163and 198 miles on a 5 day trip what ...

algebra - One number is 4 times another. If the sum of their reciprocals is 5/36...

mean & mode ? - If you were a teacher, and these numbers represented your ...

algebra 1 question pls help!!! - 1. Find the mean, median, and mode of the data ...

math - the mean of a list of seven numbers is 45. if i add two numbers to this ...

geometric mean - The geometric mean of two postitive numbers a and b is sqrt(ab...