Question

PLEASE HELP !!!!!!!!!!

Answer 1

C.13

Explanation:

D is a midpoint, which means that AD=DB= 1/2 AB = 1/2 (24) = 12

Using Pythagorean theorem we know that CD^2+DB^2=CB^2

That means that 5^2+12^2=CB^2

25+144=169

169=13^2

CB=13

a=CB=13