Someone plans to buy 100 shares of computer stock, 250 shares of oil stock, and 400 shares of automobile stock. The computer stock is selling for 64 dollars a share, oilstock is selling for 42 dollars a share, and automobile stock is selling for 19 dollars a share. Use matrix multiplication to calculate the total cost of the purchases.The total cost of the purchases is $.C

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Answered: Someone plans to buy 100 shares of…

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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you have to use each of these a. A+B b. A-B c. -4A d. 3A+2B to solve the matrix
Circle the pivots in the following matrix: 0 -1 -2 1 1 2 -1
What is the solution
There are 5,500 Scandinavians on a large cruise ship. They are all from either Norway, Sweden, or Finland. There are twice as many Finns as Norwegians and four times as many Swedes as Finns. Individually, how many Swedes, Finns, and Norwegians are on the ship? Write the three equations: Write the Augmented matrix: Solve using elementary row operations:
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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% $
You have space in your garden for 55 small flowering bulbs. Crocus bulbs cost $0.55 each and daffodil bulbs cost $0.95 each. Your budget allows you to spent $41.85 on bulbs. How many crocus bulbs and how many daffodil bulbs can you buy? Write a system of equations to represent the situation. Solve using matrices. Write the matrix and inverse equations.
Write the following system of equations as a single matrix equation. 5z -9x = 0 5y = -4+ 6z 8x +7y-10 = 0 Answer 72021 Hawkes Learning
A Sillall software corporation borrowed $115,000 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 $5,300 and the amount borrowed at 4% was times the amount borrowed at 3%. Solve the system using matrices. amount borrowed at 3% amount borrowed at 4% $ amount borrowed at 5% Need Help? Master It Read It Submit Answer
A small software corporation borrowed $292,500 to expand its software line. Some of the money was borrowed at 9%, some at 10%, and some at 12%. Use a system of equations to determine how much was borrowed at each rate if the annual interest was $29,900 and the amount borrowed at 10% was 22 times the amount borrowed at 9%. Solve the system using matrices. Step 1 Let the amount borrowed at 9% be x, the amount borrowed at 10% be y, and the amount borrowed at 12% be z. The total amount borrowed was $292,500. The total annual interest was $29,900. The amount borrowed at 10% was 2- times the amount borrowed at 9%. Write a set of equations using the information given. Convert the percentage to decimal fraction. x + y + z = 292,500 .09 x +.10 y + |.12 V z = 29,900 X x - y = 0 Write the associated augmented matrix for the given system of equations. Recall that since there are three equations in the system, the matrix will have three rows. Use the coefficients of x, y and z as entries of the…

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