Question

Daca P € [AB] astfel incat AP/AB=2/5 si AB=10 cm,atunci AP=....cm.

Answer 1

AP/AB=2/5    ⇒     2AB=3AP⇒    AB=3AP/2

AP+PB=AB

AP+1=3AP/2

AP-3AP/2=-1

(2AP-3AP)/2=-1

-AP=-1X2

-AP=-2        (-1)

AP=2cm

AB=AP+PB=2cm+1cm=3cm .

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