Answer:
The temperature needs to decrease 71° - 50° = 21° that at least not greater than 50°F
As we know, the device decrease the temperature down 3.5° every hour, so
21 : 3.5 = 6 hour
Call x is the hours we need to wait to let the device decrease, we have
x > 6
Answer:
x=1
You solve for x by cross multyplying
Answer:
![72\pi\ in^{3}](https://tex.z-dn.net/?f=72%5Cpi%5C%20in%5E%7B3%7D)
Step-by-step explanation:
step 1
<em>Calculate the volume of the cylinder (flower vase)</em>
The volume is equal to
![V=\pi r^{2}h](https://tex.z-dn.net/?f=V%3D%5Cpi%20r%5E%7B2%7Dh)
we have
-----> the radius is half the diameter
![h=12\ in](https://tex.z-dn.net/?f=h%3D12%5C%20in)
substitute the values
------> exact value
step 2
Calculate 2/3 of the volume
![V=(2/3)108\pi=72\pi\ in^{3}](https://tex.z-dn.net/?f=V%3D%282%2F3%29108%5Cpi%3D72%5Cpi%5C%20in%5E%7B3%7D)
Answer:
the answer would be p= 15
Step-by-step explanation: