Answer: The area is 572.5566
Step-by-step explanation:
27÷2=r=13.5
A=πr²
A=3.1416(π) · 13.5²(r)
A=572.5566
Answer: B
Step-by-step explanation:
1.56%<span> 1/8 of the original source (25 counts) remains at 3:00pm. This means that the </span>half-life<span> is 1 hour. Continue to find the fraction at 6:00pm.</span>
Answer:
flipped
Step-by-step explanation:
A reflection is a transformation representing a flip of a image. images can be reflected in a plane, line, and point. When reflecting a image/figure in a line or in a point, the image is congruent to the preimage. A reflection maps every point of a figure to an image across a fixed line.
Option A is correct.
If we evaluate the function at
, i.e. at the beginning, we have
![f(0)=75 \cdot 2^0 = 75 \cdot 1 = 75](https://tex.z-dn.net/?f=f%280%29%3D75%20%5Ccdot%202%5E0%20%3D%2075%20%5Ccdot%201%20%3D%2075)
with each minute, you multiply the current number of cell by 2, so they double every minute.
Option B is incorrect, because if the number of cells increases by 2 every minute, the function would be
![f(x) = 75 + 2k](https://tex.z-dn.net/?f=f%28x%29%20%3D%2075%20%2B%202k)
Option C is incorrect, because after one minute (i.e. when x=1) we have
![f(1) = 75\cdot 2^1 = 75 \cdot 2 = 150](https://tex.z-dn.net/?f=f%281%29%20%3D%2075%5Ccdot%202%5E1%20%3D%2075%20%5Ccdot%202%20%3D%20150)
cells, so 75 is not the number of cells after one minute
Option D is incorrect in both the initial value and the behaviour of the function