Question

Calculati Map a numerelor

a) Radical din 20 , radical din 5, radical din 45 cu ponderile 4, 8, 3

b) 2 supra 7, 3 supra 5, 1 supra 6 cu ponderile 14,10,12
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Answer 1

Răspuns:

Explicație pas cu pas:

Answer 2

a)

$\it m_{a.p.}=\dfrac{4\cdot\sqrt{20}+8\sqrt5+3\sqrt{45}}{4+8+3}=\dfrac{4\sqrt{4\cdot5}+8\sqrt5+3\sqrt{9\cdot5}}{15}=\dfrac{8\sqrt5+8\sqrt5+9\sqrt5}{15}=\\ \\ \\ =\dfrac{25\sqrt5^{(5}}{15}=\dfrac{5\sqrt5}{3}$

b)

$\it m_{a.p.}=\dfrac{14\cdot\dfrac{2}{7}+10\cdot\dfrac{3}{5}+12\cdot\dfrac{1}{6}}{14+10+12}=\dfrac{2\cdot2+2\cdot3+2\cdot1}{36}=\dfrac{4+6+2}{36}=\\ \\ \\ =\dfrac{\ \ 12^{(12}}{36}=\dfrac{1}{3}$