Home/ Intrebari/Q 1004
Urmator
In Process
buburuzazuza
25
user (0)
Pe: 2020-01-04T13:43:42+02:00 In: In:

aflati numere x si y stiind ca …

aflati numere x si y stiind ca sunt invers proportionale cu 3 si 2,[4] si ca media lor aritmetica este 236

Intrebari similare

1 raspuns

  1. user (0)

    2,(4)=\frac{24-2}{9}=\frac{22}{9}
    3x=2,(4)y=k<=>3x=\frac{22}{9}y=k
    3x=k=>x=\frac{k}{3}
    \frac{22}{9}y=k=>y=\frac{9k}{22}
    \frac{x+y}{2}=236<=>\frac{\frac{k}{3}+\frac{9k}{22}}{2}=236<=>\frac{22k}{66}+\frac{27k}{66}=472<=>\frac{49k}{66}=472=>k=\frac{66*472}{49}=\frac{31152}{49}
    x=\frac{k}{3}=\frac{\frac{31152}{49}}{3}=\frac{31152}{147}=\frac{10384}{49}
    y=\frac{9k}{22}=\frac{\frac{9*31152}{49}}{22}=\frac{280368}{1078}=\frac{140184}{539}
    Sper sa nu ma fii incurcat in cifre:)

    • 1
Raspunde

Raspunde