Răspunsuri

2014-03-31T20:50:34+03:00
X = 2Y
Y = 2Z rezultă Z = Y/2
Y = 7,12
(X + Z)/2 = (14,28 + 3,56)/2 = 8,92
X = 2Y
Y = 2Z rezultă Z = Y/2
Y = 7,12
(X + Z)/2 = (14,28 + 3,56)/2 = 8,92
2014-03-31T20:52:52+03:00
X=2y
y=2z
Ma= (x+z):2
y=7,12
y=2z => 7,12=2z => z= 7,12:2 => z=3,56.

x=2y => x=2x7,12=> x=14,24.

Revenim la media aritmetica: Ma= (14,24 + 3,56):2 => Ma=17,8:2 => Ma= 8,9.
2 2 2