Question

ajutor va rog!Ex 3,4,6,7.Va roog,dau coroana

Answer 1

C∩d={A,B}    C∩d={Ф}         C∩d={M}

[CD∩[DA=[CD]

a+b+c=120⇒2b+b=120⇒b=40
b=(a+c)/2⇒2b=a+c⇒a+c=80
a-c=25⇒c=27.5
a+c=80⇒2a=105⇒a=52.5
Vf. 52.5+27.5+40=120

corect este (cred eu)  d si c