![sannai0415](/avatars/45688.jpg)
sannai0415
02.12.2020 •
Mathematics
In a girl's bank, there is a collection of nickels, dimes, and quarters which amounts to $9.50. There are four times as many quarters as nickels, and 3 more dimes than nickels. How many coins of each kind are there?
Solved
Show answers
More tips
- O Other What happens if you get scared half to death twice?...
- H Horoscopes, Magic, Divination Where Did Tarot Cards Come From?...
- S Style and Beauty How to Make Your Lips Fuller? Ideas and Tips for Beautiful Lips...
- S Style and Beauty How are artificial nails removed?...
- F Family and Home How to Sew Curtain Tapes: Best Tips from Professionals...
- H Horoscopes, Magic, Divination How to Cast a Love Spell on a Guy? Guide for Guys...
- F Family and Home How to Properly Use a Water Level?...
- L Legal consultation What Documents Are Required for a Russian Passport?...
- H Health and Medicine How to Treat Styes: Causes, Symptoms, and Home Remedies...
- F Family and Home Protect Your Home or Apartment from Pesky Ants...
Answers on questions: Mathematics
- M Mathematics Have a nice day;) it’s ok to be tired but keep pushing. Just a lil while more...
- M Mathematics The dot plot below shows the hourly rate of some babysitters in a city: A number line is shown from 1 dollar to 7 dollars in increments of 1 dollar for each tick mark. The...
- M Mathematics A publisher sells 10 to the power of 6 copies of a new book. Each book has 10 to the power of 2 pages. How many pages total are there?...
- M Mathematics Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the correct position in the answer box. Release your...
- M Mathematics FREE POINTS Also is anyone else getting annoyed by the bots that put links for the answer?...
- M Mathematics What is the formulaa to fund % of selling overheads(Tender sheet)...
- M Mathematics Graphing Find the missing Coordinate Find missing T...
- M Mathematics A town of 48,730 residents is implementing a new cancer screening for all residents. One half of one percent (0.5%) of people in the town actually have the disease. The test...
- M Mathematics 6) Which statement below describes a line which has negative slope? A) As one moves to the right, the y-value decreases. B) As one moves to the right, the y-value increases....
- M Mathematics P 4.75 represents the prices p in dollars that Paige is willing to pay for popcorn. The inequality p 8.00 represents the prices p in dollars that Paige is willing to pay for...
Ответ:
Step-by-step explanation:
Let the amount of nickels be x
Let the amount of dimes be y
Let the amount of quarters be z
If the total collection amounts to $9.50, then;
x+y+z = 9.50 1
If there are four times as many quarters as nickels, then;
z = 4x 2
Also if there are 3 more dimes than nickels then;
y = x+3 3
Substitute 2 and 3 into 1;
x + x+3 + 4x = 9.50
6x = 9.50 -5
6x = 4.50
x = 4.50/6
x = $0.75
Since y = x +3
y = 0.75 + 3
y = $3.75
Also, z = 4x
z = 0.75(5)
z = $3.0
Hence there are
Ответ: