There is a 1/2 chance that he will get at least one of the two features.
There are 3 x 4 = 12 possibilities. There are all 4 colors of each 3 sizes.
All 4 of the medium trucks have one of the features.
For the other 2 sizes, only the red truck will have one of the features.
There are 4 + 2 = 6 possibilities out of 12 for a chance of 6/12 or 1/2.
Answer:
![V = \frac{1}{3} \pi {r}^{2} h \\](https://tex.z-dn.net/?f=V%20%3D%20%20%5Cfrac%7B1%7D%7B3%7D%20%5Cpi%20%7Br%7D%5E%7B2%7D%20h%20%5C%5C%20)
multiply either sides by 3:
![3 \times V = ( \frac{1}{3} \pi {r}^{2} h) \times 3 \\ \\ 3V = \pi {r}^{2} h](https://tex.z-dn.net/?f=3%20%5Ctimes%20V%20%3D%20%28%20%5Cfrac%7B1%7D%7B3%7D%20%5Cpi%20%7Br%7D%5E%7B2%7D%20h%29%20%5Ctimes%203%20%5C%5C%20%20%5C%5C%203V%20%3D%20%5Cpi%20%7Br%7D%5E%7B2%7D%20h)
divide either sides by πr² :
![{ \boxed{ \boxed{h = \frac{3V}{\pi {r}^{2} } }}} \\](https://tex.z-dn.net/?f=%7B%20%5Cboxed%7B%20%5Cboxed%7Bh%20%3D%20%20%5Cfrac%7B3V%7D%7B%5Cpi%20%7Br%7D%5E%7B2%7D%20%7D%20%7D%7D%7D%20%5C%5C%20)
Answer:
Step-by-step explanation:
-4 + 4x = -pq
Add 4 to both sides
4x = -pq + 4
Divide both sides by 4
x = ![\frac{-pq + 4}{4}](https://tex.z-dn.net/?f=%5Cfrac%7B-pq%20%2B%204%7D%7B4%7D)