Question

Notand cu Mg media proportionala a numerelor a si b aflati b stiind ca: a) a = 9 si Mg =18 b) a= 48 si mg=24 c) a=7 intreg 1/5 si mg=6 d) a=4 intreg 4/5 si mg= 12 e) a=10 intreg 15/16 si mg= 8 intreg 3/4

Answer 1

M.g.=rad(ab)

a)18=rad(9b)

324=9b

b=36

b)24=rad(48b)

576=48b

b=12

c)6=rad(36b/5)

36=36b/5

b=5

d)12=rad(24b/5)

144=24b/5

24b=720

b=30

e)35/4=rad(175b/16)

1225/16=175b/16

175b=1225

b=7