Answer:
The rate of change of area is 35360 m /year
Step-by-step explanation:
Let the width of rectangle be w
We are given that a rectangle that is twice as long as it is wide
So, Length of Rectangle = 2w
Area of rectangle A = Length \times Breadth = ![w \times 2w= 2w^2](https://tex.z-dn.net/?f=w%20%5Ctimes%202w%3D%202w%5E2)
Differentiating area with respect to time
![A=2w^2\\\frac{dA}{dt}=4w\frac{dw}{dt}](https://tex.z-dn.net/?f=A%3D2w%5E2%5C%5C%5Cfrac%7BdA%7D%7Bdt%7D%3D4w%5Cfrac%7Bdw%7D%7Bdt%7D)
We are given that
and w = 260
![\frac{dA}{dt}=4(260)(34)=35360](https://tex.z-dn.net/?f=%5Cfrac%7BdA%7D%7Bdt%7D%3D4%28260%29%2834%29%3D35360)
Hence the rate of change of area is 35360
Answer:
A.
Step-by-step explanation:
4π√5 - 2π√5 ÷ 3√5
=2π√5 ÷ 3√5
root 5 cancels out
=2π ÷ 3
The answer would be 2/5
4. divided by 2 = 2
—-
10. divided by 2 = 5
Answer:
-2x - 28
Step-by-step explanation:
-4(x+6) +2 (x-2) Distribute the -4 to (x+6) and the 2 to (x-2):
-4x - 24 + 2x - 4 Combine like terms -4 + 2x and -24-4:
-2x - 28
Hope this helped :)