2. Juanita has 1720 coins, quarters, dimes and nickels. If the total value of all the coins is $177.15,and the number of nickels is 30 more than the sum of the quarters and dimes, then find the numberof each type of coin. Once you set up the system, you may use your calculator and the matrix featuresto solve the system.

Juanita has 1720 coins, quarters, dimes, and nickels. The total value of all coins is $177.15, and…

Answered: 2. Juanita has 1720 coins, quarters,…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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Similar questions

On Monday, Sarah picked up lunches for her friends and spent $17.30 on 3 tofu banh mi and 2 bubble teas. On Friday she spent $26.75 on 5 tofu banh mi and 3 bubble teas. Set up a system of two linear equations to represent this situation, then write down the associated augmented matrix for this system. Do not solve this system.
A small software corporation borrowed $315,000 to expand its software line. The corporation borrowed some of the money at 3%, some at 4%, and some at 5%. Use a system of equations to determine how much was borrowed at each rate when the annual interest was $13,500 and the amount borrowed at 4% was 22/12/2012 times the amount borrowed at 3%. Solve the system using matrices. amount borrowed at 3% $ amount borrowed at 4% $ amount borrowed at 5% $
4. Tickets for a soccer game are $6 for adults and $4 for students. At the last game there were 220 tickets sold and $1064 collected. Write a system of linear equations to represent this situation and then use matrices to solve for the number of adult tickets sold and the number of student tickets sold at the last soccer game.
Solve the following system of linear equations: 3x1-3x2-3x3 -3 -3x1+6x2 = 0 -x1-2x2+4x3 = 5 If the system has no solution, demonstrate this by giving a row-echelon form of the augmented matrix for the system. You can resize a matrix (when appropriate) by clicking and dragging the bottom-right corner of the matrix. The system has a unique solution The system has no solution The system has a unique solution The system has infinitely many solutions x3
solve each problem by setting up and solving a system of two equations and two unknowns or a system of three equations and three unknowns. At a local confectionery, 7 pounds of cashews and 5 pounds of Spanish peanuts cost $88, and 3 pounds of cashews and 2 pounds of Spanish peanuts cost $37. Find the price per pound for cashews and for Spanish peanuts.
A “piggy” bank contains nickels, dimes and quarters totaling $6.20 in value. The bank contains 53 coins, and there are two more nickels than dimes. How many coins of each variety are there in the bank? Set up and solve a system of equations for this problem. Show all your work, and clearly indicate your answer!

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