Answer:
Volume of the cone is increasing at the rate .
Step-by-step explanation:
Given: The radius of a right circular cone is increasing at a rate of in/s while its height is decreasing at a rate of in/s.
To find: The rate at which volume of the cone changing when the radius is in. and the height is in.
Solution:
We have,
, , ,
Now, let be the volume of the cone.
So,
Differentiate with respect to .
Now, on substituting the values, we get
Hence, the volume of the cone is increasing at the rate .
105 miles
Explanation
First we need to find the time traveled. I first convert the times into minutes. Use military time if one is am and the other is pm
3:30 - 210 minutes
5:00 - 300 minutes
Now we can subtract the two
300-210= 90
Now we can convert that back into time
1:30
We now know they drove for an hour and 30 minutes, so now lets calculate that.
Knowing that they drove 70mph, that means every hour they drove 70miles. So lets add 70 for every hour
70miles ; 30 minutes
We still have 30 minutes leftover, but we know that 30 minutes is half of an hour. So we can just divide 70 in half.
70÷2= 35
Now we need to add our miles together
70+35= 105miles
Answer:
20%.
Step-by-step explanation:
3.50-2.80=0.70
0.70/3.50=0.2
0.2x100=20.
This is the formula for any percentage decrease. I suggest writing it down.
The answer is 10.35 all u have to do is add them all up and divide them by 4 and u will get ur answer which is 10.35