Question

matematică-geometrie​

Answer 1

Răspuns:

Explicație pas cu pas:

a= AD

b= DE

c= EB

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(a,b,c) d.p. ( 2,3 ,15)

a/2=b/2=c/15= K.............K= CONSTANTA DE PROPORTIONALITATE

a/2=k→a=2K

b/3=K→b=3K

c/15=K→c= 15K

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2K+3K+15K=120

20K=120

K= 120:20

K= 6

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a= 2k=2*6=12   ( AD)

b= 3K=3*6=18  ( DE)

c= 15K=15*6=90 (EB)