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 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
2 answers