Question

Triangle a b c is cut by line segment d e. line segment d e goes from side a c to line a b. the length of a e is 12, the length of e b is 4, and the length of a d is 9. what is the length of line segment d c? 2 units 3 units 6 units 9 units

Answer 1

3 Units

Explanation:

Answer 2

Answer: 3 units

Explanation:

By the triangle proportionality theorem,

`(12)/(4)=(9)/(x) \\ \\ 3=(9)/(x) \\ \\ x=\boxed{3}`