Question

va ROG pentru aceste punct e ​

Answer 1

Răspuns:

a=2·3=>a=6

b=2·3³=>b=2·27=>b=54

Mg=√a·b=>Mg=√6·54=>Mg=√324=>Mg=18

Ma=(a=b)/2=>Ma=(6+54)/2=>Ma=60/2=>Ma=30

Ma-Mg=30-18=12 (adevarat)

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x=suma initiala

x/2 cheltuie in prima zi

²⁾x-x/2=(2x-x)/2=x/2 rest

x/2·1/2=x/4 cheltuie a2a zi

100 lei cheltuie a3a zi

²⁾x/2+x/4+⁴⁾100=⁴⁾x

2x+x+400=4x

400=4x-x

x=400 suma initiala

400:2=200 lei cheltuie in prima zi

400:4=100 lei cheltuie a2a zi

100 lei cheltuie a3a zi

200+100+100=400 lei a cheltuit Oana