Accurate angle is in a circle
Answer:
9 nickles
15 dimes
21 quarters
Step-by-step explanation:
Number of nickels = N
Number of dimes = D
Number of quarters = Q
The following system can be modeled based of the given information:
![0.05N+0.10D+0.25Q=7.20\\D=N+6\\Q=D+6](https://tex.z-dn.net/?f=0.05N%2B0.10D%2B0.25Q%3D7.20%5C%5CD%3DN%2B6%5C%5CQ%3DD%2B6)
Solving the system:
![D=N+6\\Q=N+6+6=N+12\\0.05N+0.10*(N+6)+0.25*(N+12)=7.20\\0.4N=7.20-0.6-3\\N=9\\D=9+6=15\\Q=15+6=21](https://tex.z-dn.net/?f=D%3DN%2B6%5C%5CQ%3DN%2B6%2B6%3DN%2B12%5C%5C0.05N%2B0.10%2A%28N%2B6%29%2B0.25%2A%28N%2B12%29%3D7.20%5C%5C0.4N%3D7.20-0.6-3%5C%5CN%3D9%5C%5CD%3D9%2B6%3D15%5C%5CQ%3D15%2B6%3D21)
The collection consists of 9 nickels, 15 dimes and 21 quarters.
The difference in individual rate: $11.95
The difference in unit rate is: $0.50 per a truck.
Any questions?
Complete question :
Taylor earns $5 each time she walks her neighbor's dog. She has already earned $25. Write and solve an equation to find out how many more times Taylor needs to walk the dog to earn enough to buy a bike that costs $83.
Answer:
12
Step-by-step explanation:
Amount earned for walking dog = $5 per walk
Amount already earned = $25
How many more times dog needs to be walked to buy a bike which costs $83
Target amount = 83
(Target amount - already earned amount) / amount earned per Walk
(83 - 25) / 5
58 / 5
= 11.6
Hence, Taylor needs to walk her neighbor's dog 12 more times
Point A: (-17+5)÷2=-6
Point B: (-6+0)÷2=-3
Hope my answer helped u :)