Question

calucutai media aritmetica a numerelor a)7,5 si 5,7 b)4radical din 7 si radical din 28.Pliz​

Answer 1

a)

$ma = \frac{7.5 + 5.7}{2} = \frac{13.2}{2} = 6.6$

b)

$ma = \frac{4 \sqrt{7 } + \sqrt{28} }{2} = \frac{4 \sqrt{7} + 2 \sqrt{7} }{2} = \frac{6 \sqrt{7} }{2} = 3 \sqrt{7}$