Answer:
a = 15
Explanation:
using the Altitude- on- Hypotenuse theorem
(leg of Δ ABC)² = (part of hypotenuse below it) × (whole hypotenuse)
BC² = BK × BA
a² = 9 × (9 + 16) = 9 × 25 = 225 ( take square root of both sides )
a = = 15
9.5m questions
12.2m answers
= 15