Answer:
Conjecture : 2xy / ( x + y ) ≤ √xy
Step-by-step explanation:
Harmonic mean of x and y = 2xy/( x + y )
<u>Formulate a conjecture about their relative sizes </u>
we will achieve this by computing harmonic and geometric means
Geometric mean = √xy
harmonic mean = 2xy/( x + y )
attached below is the proof
7 but im not sure
a = interest rate of first CD
b = interest rate of second CD
and again, let's say the principal invested in each is $X.
Answer:10 ft
x= 3 +, 3 -
You use the quadratic formula to get x=
Then you simplify and get the answers x= 3 +, 3 -