Question

ma puteti ajuta la ex.4.Va rog!Am nevoie urgent!!!Dau coroană!

Answer 1

a)utilizezi regula de trei simpla ca in model
clasa V : m=100·360/450=80°
clasa VI: m=75·360/450=60°
clasa VII: m=125·360/450=100°
clasa VIII: m=150·360/450=120°

b)% suprafata clasa V: 360°.....100%
                                   80°.......x
x=80·100/360=22%
% suprafata clasa VI: x=60·100/360=17%
% suprafata clasa VII: x=100·100/360=28%
% suprafata clasa VIII: x=120·100/360=33%

Answer 2

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

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

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

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


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

360°.......................100
60°...........................x
x=60°×100/360=16,(6)=17

360°.......................100
100°...........................x
x=100°×100/360=27,(7)=28

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