Question

Calculeaza a= ( 28,2 - 25,8 ) : 12 + 9,8
Calculeaza b = [11,2(3) - 9,(2)] x 9 - 1/100
Calculeaza c= ( 4,56 + 16,23 - 2,39) : 8
Determina 3a + 2b +c
Determina media aritmetica a numerelor a,b,c , unde a,b,c sunt determinate la exercitiile anterioare.


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Answer 1

a=(28.2-25.8):12+9.8
2.4:12+9.8=0.2+9.8=10
b=[11.2(3)-9.(2)]×9-1/100=
[337/30+83/9]x9-1/100=

[1011+830/90]x9-1/100=
(1841/90)*9-1/100=16569/90-1/100=165690-9/900=1656891/900=1840.99

c)(4.56+16.53-2.39):8=18.7:8=2.3375
3a+2b+c=
3(10)+2(1840.991)+2.3375⇒
30+36819,8=3711.982
ba.b .c?
ma=a+b+c/3=
ma=10+184995+3711.982/3

22111.482+10/3=
6636.44
sucees