Question

va rog ajutatima dau coroana​

Answer 1

1. A) 1,2(13)=1213-12/990=1201/990
B) 0,(81)=81/99

2. A)43:4=10 rest 3 sau 10,75
B) 8,07:1,2=6,725

3. 0,144:0,12+1,69:1,3-6,25:2,5=
1,2+13-2,5=
14,2-2,5=11,7

4. [23/9+3/9+64/9x45/10]:1,2=
[26/9+320/10]:1,2=
(260/90+2880/90):12/10=
(3140/90:12/10=
3140/90x10/12=785/9x1/3=795/27

5.23,7+22,5+21,6=67,8
67,8:3=22,6 temperatura medie in Weekend

6. Ana =1,62 metri
Sora ei Raluca =1,62x1,2=1,944 metri

Succes!

Answer 2

$1.2(13) = \frac{1213 - 12}{990} = \frac{1201}{990}$

$0.(81) = \frac{81}{99} = \frac{9}{11}$

2)a)43:4=10,75

b)8,07:1,2=6,725

3)0,144:0,12+1,69:1,3-6,25:2,5=

1,2+1,3-2,5=2,5-2,5=0

4)[2,(3)×0,3+7,(1)×4,5] :1,2

(23-2/9×3/10+71-7/9×45/10):1,2

(21/9×3/10+64/9×45/10):1,2

(63/90+2880/90):1,2

(2954/90):1,2

1477/45:1,2

1477/45:12/10

1477/45×5/6

1477/54

5)-23,7+(-22,5)+(-21,6)/3=462,3/3=154,1

6)Înalțimea Ralucăi: x

x:1,2=1,62

1,2=6/5

==>>

x:6/5=1,62

x×5/6=1,62

x=6/5×1,62

1,62=81/50

x=6/5×81/50

x=243/125

x=1,944(înalțimea Ralucăi)

sper că te-am ajutat!