Răspuns :
a=0,7x7,5=5,25
b=3x400/20=60
c=1,21-0,46=0,75
ma=(a+b+c)/3=(5,25+60+0,75)/3=22
b=3x400/20=60
c=1,21-0,46=0,75
ma=(a+b+c)/3=(5,25+60+0,75)/3=22
a = 0,7 × (9,5 - 2) = 0,7 × 7,5 = 5,25
b = 3/20 din 400 = [tex]400 * \frac{3}{20} [/tex] = 60
c = 1,1^2 - 23/50 = 1,21 - 0,46 = 0,75
m = ( a + b + c ) / 3 = ( 5,25 + 60 + 0,75 ) / 3 = 66 / 3 = 33
b = 3/20 din 400 = [tex]400 * \frac{3}{20} [/tex] = 60
c = 1,1^2 - 23/50 = 1,21 - 0,46 = 0,75
m = ( a + b + c ) / 3 = ( 5,25 + 60 + 0,75 ) / 3 = 66 / 3 = 33