Question

Ex 12, plsssssssssssssssssssssssssssss dau coroana C

Answer 1

Răspuns:

Explicație pas cu pas:

12a) Sunt 2 cate 2 egale: A=C si B=D

A/2=B/3=C/2=D/3 =k

A=2k, B=3k, C=2k, D=3k

A+B+C+D =360

2*2k +3*3k = 10k =360,   k=36

A=C=72,  B=D =108

c) 1,(6) = 15/9 =5/3,    2,5 = 5/2

A*5/3 =B*5/2 =C*5/2 =D*5/2 =k

A=3k/5, B=2k/5, C=3k/5, D=2k/5

2*3k/5 + 2*2k/5 = 360

10k = 5*360

k=5*36 = 180

A=C = 3*180/5 = 3*36 = 108

B=D = 2*180/5 = 2*36 =72

La fel si restul