Answer:
C.
Step-by-step explanation:
Area of a Sector Formula: A = x/360πr²
Since we are given <em>x</em> and <em>r</em>, simply plug it in:
A = 40/360π(4)²
A = 1/9π(16)
A = 16π/9
Answer:
It represents growth, and the percentage rate of increase is of 8%
Step-by-step explanation:
Exponential equation:
An exponential equation has the following format:
![A(t) = A(0)(1 + r)^t](https://tex.z-dn.net/?f=A%28t%29%20%3D%20A%280%29%281%20%2B%20r%29%5Et)
In which A(0) is the initial amount and r is the rate of change, as a decimal. If positive, it is growth, if negative, it is decay.
In this question:
![y = 21(1.08)^x](https://tex.z-dn.net/?f=y%20%3D%2021%281.08%29%5Ex)
So
![1 + r = 1.08](https://tex.z-dn.net/?f=1%20%2B%20r%20%3D%201.08)
![r = 0.08](https://tex.z-dn.net/?f=r%20%3D%200.08)
Since r is positive, it represents growth, and the percentage rate of increase is of 0.08*100% = 8%
Answer: -(x-6) (x+2)
Step-by-step explanation: screenshot
Answer:
The height of the tree is 70.4 feet
Step-by-step explanations:
Please refer to the attached image for explanations