Question

Măcar acestea va rog!!! ​

Answer 1

Răspuns:

Explicație pas cu pas:

(a+b+c+d+e+f)/6=21 ;   a+b+c+d+e+f=21 x 6 =126 ;  (g+h+i+j)/4=61 ;           g+h+i+j=61 x 4 =244 ;   m a=(126+244)/10=370/10=37 ;

Answer 2

Răspuns:

12. (a+b+c+d+e+f):6=21

(m+x+y+z):4=61

a+b+c+d+e+f=21*6=126

m+x+y+z=61*4=244

(a+b+c+d+e+f+m+x+y+z):10=

=(126+244):10=370:10=37(media aritmetica)

13.

(a+b+c+.......+x):100=?

[19*8+11*18+(100-30)*15]:100=

=[178+198+70*15]:100=

=[1050+376]:100=

=1426:100=14,26