zad 1 str. 156 Oblicz:
a) 1/2 + 1,5 =
3,2 - 1 i 1/3 =
7,3 - 4 i 2/25 =
b) 2,4 * 3/8 =
2 i 3/4 : 2,75 =
2,5 * 2 i 1/2 =
c) (0,2 + 1/2)²=
(1 i 3/4 - 0,85)²=
(6 i 1/5 - 5,94)²=
d) (0,5)³ + (1/3)²=
(0,1)³ + (1/5)²=
1,4² + (4/5)²=

Pomocy, na jutro!

Question

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Odpowiedź :

Osamajaviz Osamajaviz · Answer 1

Odpowiedź:

a)

1/2 + 1,5 = 1/2 + 1 1/2 = 1 2/2 = 2

3,2 - 1 1/3 = 3 2/10 - 1 1/3 = 3 6/30 - 1 10/30 = 2 36/30 - 1 10/30 =

= 1 26/30 = 1 13/15

7,3 - 4 2/25 = 7 3/10 - 4 2/25 = 7 15/50 - 4 4/50 = 3 11/50

b)

2,4 * 3/8 = 24/10 * 3/8 = 3/10 * 3/1 = 9/10

2 3/4 : 2,75 = 2 3/4 : 2 3/4 = 11/4 * 4/11 = 1/1 * 1/1 = 1

2,5 * 2 1/2 = 2 1/2 * 2 1/2 = 5/2 * 5/2 = 25/4 = 6 1/4

c)

(0,2 + 1/2)² = (2/10 + 5/10)² = (7/10)² = 49/100

(1 3/4 - 0,85)² = (1 3/4 - 85/100)² = (1 75/100 - 85/100)² =

= (175/100 - 85/100)² = (90/100)² = 8100/10000 = 81/100

(6 1/5 - 5,94)² = (6,2 - 5,94)² = 0,26² = 0,0676

d)

(0,5)³ + (1/3)² = (1/2)³ + (1/3)² = 1/8 + 1/9 = 9/72 + 8/72 = 17/72

(0,1)³ + (1/5)² = (1/10)³ + (1/5)² = 1/1000 + 1/25 = 1/1000 + 40/1000 = 41/1000

1,4² + (4/5)² = 1,4² + 0,8² = 1,96 + 0,64 = 2,6

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