Question

Raspundeti repede va rog dau coroana

Answer 1

Răspuns:

1.c)-1

2b)6

3c)luni

4b)12lei

5c)13

6d)35

sper ca te am ajutat aștept coroana

Answer 2

Răspuns:

Explicație pas cu pas:

1)

=1

2)

x/y=5/4

4x-5y= K

4x=K

x=K/4

5y=K

y= K/5

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(4x+y)/y

= (4*K/4+K/5)/K/5........se simplifica 4 cu 4

= (⁵⁾k+k/5)/K/5

=( 5K+K)/5 *5/K

= 6K/5*5*K ...............se simplifica K cu K si 5 cu 5

= 6 (b)

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3)

luni =a

marti= b

miercuri =c

joi =d

vineri =e

a+b+c+d+e= suma totala

15+12+13+12+8= 60 lei

25%=25/100

25/100*60= 1/4*60 = 60/4= 15 lei (c- luni)

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4)

4b.................3p...............40 lei l *3

3b.................4p...............37 lei /*4

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12b...............9p...............120 lei

12b...............16p..............148 lei

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16p-9p= 7 p

148-120=28 ( 7p)

28:7=4 lei (costa un kg portocale)

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3x4=12 lei ( costa 3 kg portocale )

40-12= 28 lei ( costa 4 kg de banane )

28:4=7 lei (costa un kg banane)

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7+4=11 lei impreuna (c)

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5)

3√5=3*2,2=6,6

5√3=5*1,7=8,5

7+8=15 (d)

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6)

40%+35%=75%

75%=75/100

75/100*140= 105 tei ( c)