Question

va rog ajutorrrrrrrrrr!!!!! urgentttttttt

Answer 1

Răspuns:

Explicație pas cu pas:

1)

20/100*750= 150 lei (scumpirea)

750+150= 900(pret final)

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2)

25/100*440= 550/5= 110 lei (scumpirea)

440+110= 550lei (pret final)

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3)

50/100*360= 360/2=180 lei (reducerea)

360-180= 180 (pret final)

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4)

50/100*400= 400/2= 200 (reducerea)

400-200=200 lei ( pret final)

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5)

50/100*500= 250 lei (scumpirea)

500+250= 750 lei ( pret final)

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6)

10/100*220= 22 lei (reducerea)

220-22= 198 lei ( pret final)

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7)

80/100*450=360 lei (reducerea)

450-360= 90 lei (pret final)

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8)

20/100*100= 20lei (scumpirea)

100+20=120 lei ( pret final)

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9)

40/100*120= 480/10= 48 lei (reducerea)

120-48=72 lei (pret final)

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10)

70/100*250=1750/10= 175 lei ( scumpirea)

250+175= 425 lei (pret final)

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ll

a)

⁹⁾1/4+⁴⁾1/9

= 9/36+4/36

= 13/36

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b)

(10/3)²+4/3

= 100/9+³⁾4/3

=100/9+12/9

= 112/9

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c)

=⁴⁾1+²⁾1/2+1/4

=4/4+2/4+1/4

= 7/4

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d)

=100/9-³⁾1/3

=100/9+3/9

= 103/9

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lll

a)

2/13*19

= 38/13

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b)

=4/5*25/20

= 5/5

=1

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lV

x/9⁽⁹*450⁽⁹= 200

x*50=200

50x= 200

x= 200:50

x=4