Question

aflati a,b,c stiind ca a este direct proportional cu6,b cu 8 si c cu 4
a+b+c=36
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. va rogg e urgentttt (dau multe puncte)

Answer 1

Răspuns:

{a,b,c} d.p {6,8,4} =>

$\frac{a}{6}$=$\frac{b}{8}$=$\frac{c}{4}$=k

$\frac{a}{6}$=k=>a=6xk

$\frac{b}{8}$=k=>b=8xk

$\frac{c}{4}$=k=>c=4xk

axbxc=36=>6xkx8xkx4xk=36=>

=>6x8x4 x $k^{3}$=36=>192x$k^{3}$=36=>

kxkxk=$k^{3}$

=>$k^{3}$$\frac{36}{192}$^192=$\frac{5}{1}$=>

=>$k^{3}$=5=>2

a=6xk=>a=6x2=12

b=8xk=>b=8x2=16

c=4xk=>4x2=8

V=a+b+c=12+16+8=36

sper ca team ajutat si ca imi vei da coroana