Answer:
Step-by-step explanation:
a)area A=pi r^2
rate of change of area =dA/dt =2 pi r dr/dt
given dr/dt =25 ,r =50
rate of change of area =dA/dt =2 pi *50 *25 =2500pi=7854
area growing 7854 cm2/s
b)area A=pi r^2
rate of change of area =dA/dt =2 pi r dr/dt
given dr/dt =25 ,A =64
pi r^2 =64
=>r =8/√pi
rate of change of area =dA/dt =2 pi *(8/√pi) *25 =400√pi=708.98
area growing 708.98 cm2/s
We can do like we did before, distribute the denominator,
Answer:
False
Step-by-step explanation:
To determine whether the statemaent "If 
is true, then 
is also true" holds, you can form the truth table:
When the result of the column takes value 1 (true), the result of the column is not always 1, then the statement is false.
Answer:
you could drive 3600 miles on 60 gallons and 60 miles gas mileage
Step-by-step explanation:
560/10 as a fraction *6/6 as a fraction = 3600/60
Answer: No he is not correct the answer is 6 3/8
Step-by-step explanation: so what you have to do is add the 2 numbers you it should look like this(2 3/4+ 3 5/8) then you want to add the 2 and the 3 and add the 3/4 and 5/8 it should look like this (5+11/8) then you want to converse the number to a mixed number it should look like this (5+1+3/8) then you should add the
