To solve this we are going to use the formula for the area of a circle:
![A= \frac{1}{4} \pi d^2](https://tex.z-dn.net/?f=A%3D%20%5Cfrac%7B1%7D%7B4%7D%20%5Cpi%20d%5E2%20)
where
![A](https://tex.z-dn.net/?f=A)
is the area of the circle
![d](https://tex.z-dn.net/?f=d)
is the diameter of the circle
We know from our problem that the area of our circle is 10 inches long, so
![d=10in](https://tex.z-dn.net/?f=d%3D10in)
. Lets replace that value in our formula to find
![A](https://tex.z-dn.net/?f=A)
:
![A=\frac{1}{4} \pi (10in)^2](https://tex.z-dn.net/?f=A%3D%5Cfrac%7B1%7D%7B4%7D%20%5Cpi%20%2810in%29%5E2)
![A=78.54in^2](https://tex.z-dn.net/?f=A%3D78.54in%5E2)
We can conclude that the correct answer is: 78.54 square inches, or in centimeters: 506.7 square cm.
Answer:
(10, -29)
Step-by-step explanation:
I assume you are looking for the solution to this system of equations.
Plug them both into a graphing calculator. The point where they cross is:
(10, -29)
Riding time after lunch = 41.
Riding time before lunch = 5 * 41 - 1
5 * 41 - 1 =
= 205 - 1 =
= 204
It means Javier rode his bike for 204 minutes (3 hours and 24 minutes) before lunch.
The right answer is B (b=-0.243)
Answer:
The graph looks like this
Step-by-step explanation:
Hope it helped, heres the link for the graphing calculator I use
desmos com/calculator
Add a . between desmos and com