1. C is the right angle so AB is the hypotenuse and AD is the altitude to the hypotenuse.
The hypotenuse is
![AB=c= \sqrt{15^2 + 20^2} = \sqrt{5^2(3^2+4^2)} = 25](https://tex.z-dn.net/?f=AB%3Dc%3D%20%5Csqrt%7B15%5E2%20%2B%2020%5E2%7D%20%3D%20%5Csqrt%7B5%5E2%283%5E2%2B4%5E2%29%7D%20%3D%2025)
The area calculations must match. Let h=CD
![\frac 1 2 a b = \frac 1 2 c h](https://tex.z-dn.net/?f=%20%5Cfrac%201%202%20a%20b%20%3D%20%5Cfrac%201%202%20c%20h%20)
![h = \dfrac{ab}{c} = (15)(20)/25 = 12](https://tex.z-dn.net/?f=%20h%20%20%3D%20%5Cdfrac%7Bab%7D%7Bc%7D%20%3D%20%2815%29%2820%29%2F25%20%3D%2012%20)
Answer: 12
2. This is the same triangle as above. We seek x=AD and DB=25-x
![12^2 + x^2 = 15^2](https://tex.z-dn.net/?f=%2012%5E2%20%2B%20x%5E2%20%3D%2015%5E2%20)
![x = \sqrt{3^2(5^2-4^2)} = 9](https://tex.z-dn.net/?f=%20x%20%3D%20%5Csqrt%7B3%5E2%285%5E2-4%5E2%29%7D%20%3D%209%20)
AD=9 and DB=25-9=16
Answer: AD=9, DB=16
Answer:
yeah i am really bored
Step-by-step explanation:
The answer is -18
I think.
<span>2% of 50 → 2 per cent of 50 = 0.02 × 50 = 1 → 1 book .... so Alexa Read 51 books
</span>
Answer:
![\frac{1}{35\\\\}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B35%5C%5C%5C%5C%7D)
Step-by-step explanation:
÷ 7 =
*
=
![\frac{1}{35}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B35%7D)