Question Number 104841 by bramlex last updated on 24/Jul/20

Commented by1549442205PVT last updated on 24/Jul/20

please,who can translate this  language to English or tell me it is  what  language so i can get help from  other person.

Commented by$@y@m last updated on 24/Jul/20

I think translation is not required.  I don′t know this language literally,  but understood the question and  solved it because it has universal  language of Math.

Commented by1549442205PVT last updated on 24/Jul/20

That seems from Uzbek language  .Don′t know  what is question of  problem.You have a good guess

Answered by john santu last updated on 24/Jul/20

⇒ ((12.5)/2) + 26 +((ax.sin α)/2) = (((x+5).12)/2)  ⇒30 + 26 + ((ax.sin α)/2) = 6x +30  ⇒26 + ((ax.sin α)/2) = 6x...(1)  ⇒((a.sin α)/2) = 26 ⇒a.sin α = 4...(2)  ⇒ 26 + 2x = 6x ; 13 = 2x ; x = ((13)/2)  (JS ⊛ )

Commented bybramlex last updated on 24/Jul/20

thank you ♣

Answered by $@y@m last updated on 24/Jul/20

S(AED)=26  (1/2)×ED×13sin θ=26  EDsin θ=4 ....(1)  S(ABD)=(1/2)×x×12 =6x .....(2)  S(EBD)=(1/2)×ED×xsin θ=2x {using (1)  Now,  S(ABD)=S(AED)+S(EBD)  ⇒6x=26+2x  4x=26  x=6,5 sm

Commented bybramlex last updated on 24/Jul/20

thank you ♠

Answered by 1549442205PVT last updated on 24/Jul/20

If question of problem being find the length x of segment BD:  AC=(√(AD^2 −CD^2 ))=(√(13^2 −5^2 ))=(√(144))=12cm^2   S(ABD)=(1/2)BD×AC=(1/2).x.12=6x(cm^2 )  DE is the bisector so  ((AE)/(EB))=((AD)/(BD))=((13)/x)  ((S(AED))/(S(BED)))=((2S(AED))/(2S(BED)))=((DA.DEsinθ)/(DB.DEsinθ))=((AD)/(BD))=((13)/x)  ⇒((26)/(6x−26))=((13)/x)⇔26x=78x−338  ⇒52x=338⇔x=((338)/(52))=6,5 cm  Hence,we choose answer D(6,5)