What is the correct answer? Please provide an explanation.
2 answers:
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Answer:
11.5
Step-by-step explanation
a^2+b^2=c^2
8(8)+(x)^2=196
64 + x^2=196
=
x=11.48
x=11.5 rounded
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 )
Conjecture : 2xy / ( x + y ) ≤ √xy
attached below is the proof
