Determine the value of x to the nearest tenth.

Question

Triangle ABC has an altitude BD. AD is 20. DC is 8. Find AB.

Answer 1

With the given information, and not knowing what x refers to, all you can say is ABC is either a right or acute triangle with all angles < 90 degrees. AB > BD, but there is no limit on how large AB or BD or BC is.

AC=20+8 = 28

0<DC<8

BC>8

Perimeter>56

0<Area< infinity

It's unclear what "x" refers to. With more information on "x" you could probably find a unique solution for AB