1 What ways of travelling would you prefer? 2 What types of travelling do you know? 3. What transport - id1737541320200507 от кактус107 07.05.2020 23:21

Question

Математика: 1 What ways of travelling would you prefer? 2 What types of travelling do you know? 3. What transport would you choose and why? 4 What animals, which are in danger of extinction do you know? 5. Why do animals become extinct? 6. What does your country do in order to solve the problem of animal extinction? 7. What is world heritage? 8. What world heritage sites do you know? 9. What special animal is a heritage in Kazakhstan? ​

кактус107 · Accepted Answer

1) (-8,1) : 3= (-81/10) : 9/3 = (-81/10) · 3/9= -(9·3)/10= -27/10= -2,7
    (-8,1) : (-0,9)= (-81/10) : (-9/10) = (-81/10) · (-10/9) = 81/9 = 9

2) -6,5 : 1,3= -65/10 : 13/10 = -65/10 ·10/13 = -65/13= -5
   5,2 :1,3 = 52/10 : 13/10 = 52/10 · 10/13 = 52/13 = 4

3) -8,5 : (-1,7) = -85/10 : (-17/10) = -85/10 · (-10/17)=85/17 = 5
    -8,5 : (-(-5)) = -85/10 : 5= -85/10 : 25/5 = -85/10 · 5/25 = -17/(2·5)= -17/10= -1,7

4) -4,5 :(-1,8)= -45/10 : (-18/10)= -45/10 · (-10/18)= 45/18= 2,5
    9 :(-1,8)= 90/10 : (-18/10)= 90/10 · (-10/18)= -90/18= -5

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