Question

va rog repede, dau coroana​

Answer 1

Răspuns:

R:a)y<x<z;b)z <y <x

Explicație pas cu pas:

x=2,(5)(3/5)²-2/15×1,5=

2 5/9×9/25-2/15×15/10=

23/9×9/25-2/15×15/10=

23/25-⁵1/5=18/25=0,72

y=(3 2/21-³17/7)²7/2-2,(3)=

(65-51)/21×7/2-2 3/9=

14/21×7/2-7/3=14/6-7/3=7/3-7/3=0

z=7/24-5/12:2+11/5(3/11+1/3)=

7/24-5/6+11/5(9+11)/33=

7/24-5/6+11/5×20/33=7/24-⁴5/6+⁸4/3=

(7-20+32)/24=19/24=0,79

b)x=13/60:1/20-5/8(3 1/2-2 1/3)=

13/60×20/1-5/8(7/2-7/3)=

13/3-5/8×7(3-2)/6=13/3-5/8×7/6=

¹⁶13/3-34/48=(208-34)/48=174/48=

87/24=3,6

y=8/15:[(7/5-2 1/2)×10+3]+7/30=

8/15:[(²7/5-⁵-5/2)×10+3]+7/30=

8/15:(-110/10+3)+7/30=

8/15:(-8)+7/30=-²1/15+7/30=

5/30=1/6=0,16

z=12/25[(4/3-1 1/5)×15+8]-4/5=

12/25[⁵4/3-³6/5)×15+8]-4/5=

12/25(-16/15×15+8)-4/5=

12/25(-16+8)-4/5=12/25(-8)-⁵4/5=

-96/25-20/25=-116/25=-4,64

Answer 2

Răspuns:

Explicație pas cu pas: