Andreamathematics

Solve the  following operation and check if the answer are true( do the process) a)  (12 – 2 ) : ( 1 – 6 ) = – 2                            b))  – 2 + (– 5 – 12 : 3 ) . (– 3 + 4 : 2 ) =   7 c) – 11 + (– 4 + 7 – 11 ) . (– 3 + 6 ) = – 35      d) – 11 – (– 2 + 8 . 4 ) : ( 7 – 4 . 7 + 6 ) =   – 9   e) – 2 – (– 5 – 7 ) : (– 4 + 5 – 3 ) =   – 8           f) – (– 2 . 4 + 12 : 3 ) : ( 11 – 3 . 2 – 1 ) =   1   g)       (– 3 + 5 – 2 ) . (– 8 + 3 ) – (– 5 ) . (– 3 + 7 ) =    20 h)        – (– 3 + 3 . 5 ) : (– 2 . 2 ) + (– 2 ) . (– 1 + 14 : 2 ) =   – 9 Solve the following iperation have inmind( divisions are firsta than additiona and subtraction) a) 5 – 12 : 3 + 7  =   8 ...

Write the following exercises or  print them, (don´t solve them ) we are goning to solve them in class! 1.  In my company the distribution is the following:  Mechanics= 50 Secretaries= 46 Drivers= 40, M and S=30, M and D= 29  S and D=26.  The three activities= 20.  How many employers are there? 2.  ·          In my class the students prefer:  Science= 39 Math= 34 English= 30 S and M= 20 S and E= 18 M and E= 16 The three = 14.  How many students are there? 3. In an interview people answer about their best city for vacation:  Miami= 300 Pans= 250 London= 200  M and P= 150 M and L= 140  L and P= 130 the three= 120  what was the total, do the intersection