sorianofrancine100
sorianofrancine100 sorianofrancine100
  • 12-10-2020
  • Mathematics
contestada

if three arthmethic means are are inserted between -15 and 9,find the first of these arthmetic means.
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Respuesta :

jimrgrant1 jimrgrant1
  • 12-10-2020

Answer:

- 9

Step-by-step explanation:

We require

- 15 , m₁, m₂, m₃, 9

The average of the end values gives m₂ , that is

m₂ = [tex]\frac{-15+9}{2}[/tex] = [tex]\frac{-6}{2}[/tex] = - 3

Similarly, the average of - 15 and m₂ gives m₁

m₁ = [tex]\frac{-15-3}{2}[/tex] = [tex]\frac{-18}{2}[/tex] = - 9

The first arithmetic mean m₁ = - 9

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