So first of all the question is asking you to convert feet to inches
d(t)=2t^2. [5,9]
The average rate of change is calculated by the formula: d(t2) - d(t1) / t2 - t1
So plug in 5 as t1 and 9 as t2.
d(9) - d(5) / 9 - 5 =
(2×81) - (2×25) / 9 - 5 =
162 - 50 / 4 =
112 / 4 = 28
The average speed is 28 feet.
Answer:
So whats the question then ????
X= (k+c):(m- ny/b)=(k+c): (mb-ny)/b= (k+c)*b/(mb-ny)
x= (bc+bk)/bm-ny
D is correct
Answer: ![5027.2\ ft^2](https://tex.z-dn.net/?f=5027.2%5C%20ft%5E2)
Step-by-step explanation:
Given
The radius of the circle is ![r=40\ ft](https://tex.z-dn.net/?f=r%3D40%5C%20ft)
The area of the circle is given by ![\pi r^2](https://tex.z-dn.net/?f=%5Cpi%20r%5E2)
Insert the value of radius and get the area to play
![\Rightarrow \text{Area A=}\pi \times 40^2\\\\\Rightarrow A=3.142\times 1600\Rightarrow A=5027.2\ ft^2](https://tex.z-dn.net/?f=%5CRightarrow%20%5Ctext%7BArea%20A%3D%7D%5Cpi%20%5Ctimes%2040%5E2%5C%5C%5C%5C%5CRightarrow%20A%3D3.142%5Ctimes%201600%5CRightarrow%20A%3D5027.2%5C%20ft%5E2)
Thus, the area to play is ![5027.2\ ft^2](https://tex.z-dn.net/?f=5027.2%5C%20ft%5E2)