Assuming x = nickels, y = quarters
![x + y = 40 \\ 0.05x + 0.25y = 5.20](https://tex.z-dn.net/?f=x%20%2B%20y%20%3D%2040%20%5C%5C%200.05x%20%2B%200.25y%20%3D%205.20)
![x + y = 40 \\ x = 40 - y](https://tex.z-dn.net/?f=x%20%2B%20y%20%3D%2040%20%5C%5C%20x%20%3D%2040%20-%20y)
Substitute that into
![0.05(40 - y) + 0.25y = 5.20 \\ 2 - 0.05y + 0.25y = 5.20 \\ 0.2y = 3.20 \\ y = 16](https://tex.z-dn.net/?f=0.05%2840%20-%20y%29%20%2B%200.25y%20%3D%205.20%20%5C%5C%202%20-%200.05y%20%2B%200.25y%20%3D%205.20%20%5C%5C%200.2y%20%3D%203.20%20%5C%5C%20y%20%3D%2016)
Substitute that into
![x + 16 = 40 \\ x = 24](https://tex.z-dn.net/?f=x%20%2B%2016%20%3D%2040%20%5C%5C%20x%20%3D%2024)
Answer : He has 24 nickels.
Hope this helps. - M
Given
centre of circle O(3,2)=O(x0,y0)
point on circle P(6,-2)
Standard equation of circle:
(x-x0)^2+(y-y0)^2=r^2
r=radius of circle
= (distance OP)
= sqrt((6-3)^2+(-2-2)^2)
=sqrt(3^2+(-4)^2)
=sqrt(25)
=>
r^2=(sqrt(25))^2=25
Equation of circle
(x-x0)^2+(y-y0)^2=r^2
(x-3)^2+(y-2)^2=25 ............... standard equation of circle
Answer: Aaron gets paid $19.10 per hour.
When you divide 152.80 by 8, you get 19.1 simplified. But in this case, it is in money so you need to put a 0 at the end.
Answer:
it is located in quad III
Step-by-step explanation: