What is the value of a?
5 units
5 1/3 units
6 2/3 units
7 units

Step-by-step explanation:

In this problem we have to use the altitude theorem in a right triangle, because the segment in it, it's an altitude.

This theorem states that:

Where is the altitude, one of the parts of the divided side by the altitude, and is the other part.

Applying this theorem, we have:

Therefore, the right answer is the second option.

The answer is 5 1/3 units.

17

step-by-step explanation:

51/3=17

thus 17 is your answer.