Question

Am nevoie de ajutor va rog frumos! Repedee​

Answer 1

Răspuns:

1.

p=5/(5+11)=5/16

2.

20 - 1/10 × 20 = 18

18/20 = 9/10 = 0,9

Answer 2

$\bf 2.\ \ \it p=\dfrac{nr.\ cazuri\ favorabile}{nr.\ cazuri\ posibile}=\dfrac{5}{5+11}=\dfrac{5}{16}\\ \\ \\ \bf 3.\ \ \it 10\%\ din\ 20=\dfrac{10}{100}\cdot20=\dfrac{200}{100}=2 \ell ei\ (reducerea)\\ \\ \\ 20-2=18 \ell ei\ (pre\c{\it t}ul\ nou)\\ \\ \\ \dfrac{\ 18^{(2}}{20}=\dfrac{9}{10}\ (raportul\ cerut)$