Question

Y= 15 , how do we solve it ? Please help !!!!

Answer 1

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Answer:

y = 15

Explanation:

Triangle ABC is similar to triangle DEC, so corresponding segments are proportional.

EB/DA = CB/CA . . . . . . . . . a proportion involving corresponding segments

y/20 = 21/28 . . . . . . . . . . . . with numbers filled in

y = 20(21/28) = 20(3/4) . . . multiply by 20 to find y

y = 15