![maryjane8872](/avatars/6742.jpg)
maryjane8872
02.03.2020 •
Mathematics
Chris has a jar with nickels and quarters in it. There are 95 coins in the jar and the coins total $12.95. How many of each coin is there?
Solved
Show answers
More tips
- A Animals and plants How to Properly Care for Orchids: Secrets to Successful Cultivation...
- W Work and Career Which types of activities are not subject to mandatory licensing?...
- C Computers and Internet Thin Client: What It Is and Why You Need It?...
- F Food and Cooking The Most Delicious and Simple Fish in Batter Recipe...
- F Food and Cooking Red Caviar: How to Choose the Best?...
- C Computers and Internet Clearing Cache: How to Speed Up Your Browser...
- S Style and Beauty How are artificial nails removed?...
- S Style and Beauty Secrets of Tying a Pareo: 5 Ways...
- F Food and Cooking Everything You Need to Know About Pasta...
Answers on questions: Mathematics
- M Mathematics What is the most common measure of central tendency?...
- M Mathematics What is the product? (6 r minus 1)(negative 8 r minus 3)...
- M Mathematics The graph below shows the numbers of cups of kiwi juice that are mixed with different numbers of cups of lemon-lime soda to make servings of kiwi soda: a graph is shown....
- M Mathematics The sum of the digit of a two digit is number is 9 . also nine times this number is twice the number obtained by reversing the order of the digit .find the number...
- M Mathematics Which pyramid has a greater volume and how much greater is its volume?...
- M Mathematics Y= –a system of equations. y equals negative startfraction one-half endfraction x plus 4. x plus 2 y equals negative 8.x + 4 x + 2y = –8 how many solutions does this linear...
- M Mathematics What is the solution to the equation 3sqrt x+4 + 3sqrt 2x+8 = 0...
- M Mathematics Thinking critically you think that $39,500 is a good salary and are interested in a job with fast pax. what other information might you want to know about fast pax salaries,...
- M Mathematics Andy is a stock analyst who is evaluating mxc and bpp. on july 12, 2010, the price of mxc before the open was $44.20 per share, and it closed at $42.07 per share. the...
- M Mathematics Construct the bisector of the following figures....
Ответ:
41 nickels, 54 quarters
Step-by-step explanation:
Let N represent the quantity of nickels
Let Q represent the quantity of quarters
Note that the value of a nickel is 5 cents (.05)
and the value of a qaurter is 25 cents (.25)
Value: .05N + .25Q = 12.95
Quantity: N + Q = 95
We have a system of equations. Use Elimination Method to solve.
100(.05N + .25Q = 12.95) → 5N + 25Q = 1295
-5 (N + Q = 95) → -5N - 5Q = -475
20Q = 820
÷20 ÷20
Q = 41
Input the value of Q into one of the equations to solve for N
N + Q = 95
N + 41 = 95
N = 54
Check:
.05N + .25Q = 12.95
.05(54) + .25(41) = 12.95
2.70 + 10.25 = 12.95
12.95 = 12.95![\large\checkmark](/tpl/images/0529/9360/42ea3.png)
Ответ: