Question

Wykonaj załącznik z obliczeniami od punktu 7

Answer 1

7)

-3/14 * 7/9 - 8/15 : (-4/5)+ 1/12= -1/6 - 8/15 *(-5/4) + 1/12 =

= -1/6 + 2/3 + 1/12 = -2/12 + 8/12 + 1/12 =  7/12

 

8)

2,5 + ( 2/3-1,8 * 5/6):(-1/3)³ = 2,5 +(2/3 - 18/10 * 5/6) :(-1/27) =

= 2,5 + (2/3 -3/2) * (-27/1) = 2,5 + (4/6 -4/9) * (-27/1) =

= 2,5 + (-5/6)* (-27/1) = 2,5 + 135/6 = 2,5 + 22,5 = 25

 

9)

[√(1i9/16) – (-2)² : 1i1/3 )]  / -5 = (√25/16 – 4 :4/3): (-5) =

= (5/4 – 4* 3/4) * (1/5) = (1i1/4 – 3) * (-1/5) = (-1i3/4) * (-1/5)=

= (-7/4) * (-1/5) = 7/20

25% * 7/20 = 25/100 * 7/20 = 7/80

 

10)

{(-2)³ * [-2/3*9/8 – 2/9 * (-3/8)]} / (√25/6 * ½) =

=[-8 *(3/4+1/12)]/ (5/4 * 1/2) =

= [-8*(-9/12 +1/12)] : 5/8 =[( -8) * (-8/12) ] * 8/5 =

=16/3 *8/5 =128/15

50% * 128/15 = 50/100 * 128/15 = 64/15 = 4i4/15