Question

Ma puteți ajuta la ex. 4.Va rog!!

Answer 1

a)
450 elevi........... 360°
100 elevi............ x°
450/100× 360/x=>x=100×360/450 = 80 °

450 elevi........... 360°
75 elevi............ x°
450/75=360/x=>x=75×360/450=60°

450 elevi........... 360°
125 elevi............ x°
450/125=360/x=>x= 125×360/450=100°

450 elevi........... 360°
150elevi............ x°
450/150=360/x=>x= 150×360/450=120°

b)
360°......... 100
80°............ x
360/80=100/x=>x= 80×100/360=22,(2)

360°......... 100
60°............ x
360/60=100/x=>x= 60×100/360=16,(6)

360°......... 100
100°............ x
360/100=100/x=>x= 100×100/360=27,(7)

360°......... 100
120°............ x
360/120=100/x=>x= 120×100/360=33,(3)