Question

in figure DE equals to bc
ab equals to 7.6 cm
AD equals to 1.9cm
then find AE:EC
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Answer 1

Answer:

2). 1:3, 3). 2:5

Step-by-step explanation:

Δ ABC ~ Δ ADE

AD : DB = AE : EC

2). AB = 7.6 cm, AD = 1.9 cm

DB = AB - AD = 7.6 - 1.9 = 5.7 cm

AD : DB = 1.9 : 5.7 = 1 : 3 ===> AE : EC = 1 : 3

3). DB = 5.6 - 1.6 = 4

AD : DB = 1.6 : 4 = 16 : 40 = 2 : 5 ===> AE : EC = 2 : 5

Answer 2

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Δ ABC ~ Δ ADE

AD : DB = AE : EC

2). AB = 7.6 cm, AD = 1.9 cm

DB = AB - AD = 7.6 - 1.9 = 5.7 cm

AD : DB = 1.9 : 5.7 = 1 : 3

=> AE : EC = 1 : 3

3). DB = 5.6 - 1.6 = 4

AD : DB = 1.6 : 4 = 16 : 40 = 2 : 5

=> AE : EC = 2 : 5

Thanks...