Answer:
Option D.The ratio of the radius of a circle to its circumference
Step-by-step explanation:
<em>Verify each statement</em>
A) The ratio of the circumference of a circle to its diameter
The statement is True
Because
![C=\pi D](https://tex.z-dn.net/?f=C%3D%5Cpi%20D)
so
![\pi=C/D](https://tex.z-dn.net/?f=%5Cpi%3DC%2FD)
B) Approximated to be 3.14
The statement is True
Because ![\pi=3.14159265...](https://tex.z-dn.net/?f=%5Cpi%3D3.14159265...)
C) Approximated to be 22/7
The statement is True
Because
![\frac{22}{7}=3.1423](https://tex.z-dn.net/?f=%5Cfrac%7B22%7D%7B7%7D%3D3.1423)
D) The ratio of the radius of a circle to its circumference
The statement is not True
Because
![\frac{r}{2\pi r}=\frac{1}{2\pi}](https://tex.z-dn.net/?f=%5Cfrac%7Br%7D%7B2%5Cpi%20r%7D%3D%5Cfrac%7B1%7D%7B2%5Cpi%7D)
Answer:
15i^2
Step-by-step explanation:
a negative times a positive is a negative and a negative times a negative is positive
-5×-3=15 and i×i=i^2
Answer:
x=-2
Step-by-step explanation:
5x -10x- 30= 10x
-5x -30 = 10x
-30=15x
x=-2
The profits at x = $185 is 0 and the graph is attached below:
<h3>What is graph?</h3>
Graph is a mathematical representation of a network and it describes the relationship between lines and points.
Function is to model the profits of a new pet-monitoring system, so, if the profits are y and x then y = f(x)
The curve shows that y is negative at values of x< $95, then the profits increase when x varies between $95 and $140.
The profits reach a maximum at $140 and then the profits start to reduce as x increases again.
So, the profits at x = $185 is 0.
Learn more about this concept here:
brainly.com/question/16887458
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slope is 2/3 and y intercept is 7