Answer: AC = 15, BD = 7.2
Step-by-step explanation:
Use Pythagorean Theorem to solve for AC:
AB² + BC² = AC²
12² + 9² = AC²
144 + 81 = AC²
225 = AC²
√225 = √AC²
15 = AC
To solve for BD, set up a proportion using the the small side and hypotenuse of ΔABC and ΔADB.
[tex]\dfrac{s}{h}:\dfrac{9}{15}=\dfrac{BD}{12}[/tex]
[tex]\dfrac{9(12)}{15}=BD[/tex]
7.2 = BD
