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gulaghasi [49]
2 years ago
5

Please answer number 14 I already tried but don’t understand

Mathematics
1 answer:
Rudiy272 years ago
8 0
  • Answer:
  • < abc =  < ebc \\  < acb =  < ecd \\ if \: two \: angles \: in  \:  the \:two \: different \:  triangles \: are \: equal \: then \: the \: third \: angle  \: in \: the \: triangle\: must \: be  \:  equal. \\ using \: pythogres \: theorum   \\  ab = \sqrt( ac ^{2}  - bc^{2} )\\  =  \sqrt (15 ^{2}  - 12 ^{2})  \\  =  \sqrt( 225 - 144 )\\  =   \sqrt(81) \\  ab = 9 \\ sides \: of \: similar \: triangle \: are \: propotional \\   ac  \div ec = dc \div bc \\ 15 \div x = 12 \div 6\\ x = 15 \times 6\div 12\\ x = 15  \div  2 \\ x = 7.5 \\ so \: ec \:  = 7.5 \\ you \: can \: check \: this \: by \: applying \: pythogores \: theorum. \\ i \: hope \: this  \:  helps

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