subject
Mathematics, 12.01.2021 17:20 student10190

Amanda has 21 coins in her piggy bank made up of nickels, dimes, and quarters. There are twice as many quarters as nickels and the total value of all the coins is $3.60. Let n = the number of nickels, d = the number of dimes, and q = the number of quarters. The system shown below represents this situation. q=2n n+d+q=21 0.05n+0.10d+0.25q=3.6 Amanda plans to set up an augmented matrix to solve the system. If she solves it correctly, how many quarters should be in her piggy bank?

ansver
Answers: 2

Other questions on the subject: Mathematics

image
Mathematics, 21.06.2019 17:30, emilyjanae9961
What is the base of 1/9 to the power of 2
Answers: 1
image
Mathematics, 21.06.2019 18:40, hansesk
Ten times the square of a non-zero number is eqaul to ninety times the number
Answers: 1
image
Mathematics, 21.06.2019 21:50, jadea520
In a singing competition, there are 150 participants. at the end of each round, 40% of the participants are eliminated. how many participants are left after n rounds?
Answers: 1
image
Mathematics, 21.06.2019 22:00, levon15
Select the conic section that represents the equation. 3x2 + 3y2 -2x + 4 = 0
Answers: 2
You know the right answer?
Amanda has 21 coins in her piggy bank made up of nickels, dimes, and quarters. There are twice as ma...

Questions in other subjects:

Konu
Mathematics, 10.11.2019 14:31
Konu
Chemistry, 10.11.2019 14:31