Please see the pic, I'd solved in it.
Answer:
Step-by-step explanation:
We are given that
Radius of sphere expanding at the rate=
Volume of sphere=
Surface area of sphere=
We have to determine the rate at which the volume is changing with respect to time at r= 2 cm.
Differentiate w.r.t time
Substitute the values then we get
Hence, the rate at which the volume of sphere is changing is given by
Answer:
Step-by-step explanation:
Cos(Sec - 1 ) = 1 - cosC
Cos and Sec are reciprocals which when multiplied together is 1
-1 * Cos = -Cos
SO: 1 - Cos = 1 - Cos
Hope this helps!
Yes because if the input doesn't have more than one line drawn from it then it is a function for sure
Let the width of the rectangle be x
Then length =x-4
Area=x(x-4)=140
x²-4x=140
x²-4x-140=0
x²-14x+10x-140=0
x(x-14)+10(x-14)=0
(x-14)(x+10)=0
Therefore,length=14 cm and width=10 cm