1,954 Answered Questions for the topic linear algebra

Linear Algebra

08/02/20

Which term of the sequence

5, 14, 23, ....., is 239?
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Linear Algebra

08/02/20

Suppose an arithmetic sequence has

A8=-16 and a16=-40, find a1
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Linear Algebra Math Calculus Precalculus

07/30/20

Please help with the following question
If one eigenvalue of a 2 by 2 matrix   is     and a corresponding eigenvector of   is   , then the general solution of the system ODEs:A.)is  B.) can't be determined. Solving the system requires... more
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07/30/20

Please help me with this question.
Matrix is Not in reduced echelon form becauseA.)the last column has two non-zero elements.B.)ther than the leading 1 in the 3rd column, there is anothe non-zero element.C.)the non-zero element in... more
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07/30/20

Please help me with this question.
Matrixis an augenmented matrix of a linear system of equations and is in a Reduced Echelon form.If the system has only 1 solution, then A.)a=1, b=0, c can be any valueB.)a=1, b=1, c=0C.)a=0,... more
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07/30/20

Please help with augenmented matrix of a linear system of equations and is in a Reduced Echelon form
Matrix is an augenmented matrix of a linear system of equations and is in a Reduced Echelon form.If the system has only 1 solution, then A.)a=1, b=0, c can be any valueB.)a=1, b=1, c=0C.)a=0,... more
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07/30/20

please help with Eigenvalue question
Use the Eigenvalue Method to solve the following system of ODES:{x'(t)=x(t)+2y(t), y'(t)=-x(t)+4y(t)}
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07/30/20

Use the Eigenvalue Method to solve the following system of ODES
Use the Eigenvalue Method to solve the following system of ODES:  Hint: The corresponding coefficient matrix has a pair of complex eigenvalues.Please show steps.
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Linear Algebra Algebra 1 Algebra 2 Prealgebra

07/30/20

Trigonometry graphing question
Hello! I'm having some trouble graphing the following and would like someone to help me with it, please.Graph  on [-4π, 4π] and verbalize how the graph varies from the graphs of . Graph  on the... more
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Linear Algebra Linear Equations

07/30/20

State the problem in linear programming terms and solve it using the simplex method.
A furniture manufacturing company plans to make two products chairs and tables from its available resources, which consist of 400 board feet of mahogany timber and 450 man hours of... more
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Linear Algebra

07/27/20

Rob weighs 6 kg more than Kiara.Kiara can lift 6 kg less than one and a half times her weight.Rob can lift a quarter more than his weight.They can both lift the same weight.How much does Rob weigh?
Kiara is changed into KRob is equal to R
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Linear Algebra

07/24/20

How do you create a system of equations that has (-2, 5) as it’s only solution?
Your system must have this form: Ax + By = C and Dx + Ey = F. None of A, B, D, or E is equal to 0 or 1. It’s okay if C or F end up being equal to 0 or 1.
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Linear Algebra Algebra 1 Algebra 2 Prealgebra

07/21/20

Graph exponential function
Hi peeps, can somebody please help me with this exercise? I'm having a hard time with it and am going nowhere.Thank you in advance!!Graph the function  and its reflection about the line y=x on the... more
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Linear Algebra Math Algebra Linear Equations

07/20/20

Algebraic word problem
Given that y = ax + b/8. When y = 1, x = 13 and when y = -1, x = -3. What is the value of b?
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Linear Algebra Math Algebra Linear Equations

07/20/20

Boat rate of change problem
A boat travels with the current at 21 km/hr and travels against the current at 13 km/hr. The speed of the boat in still water is v km/hr. What is the value of v?
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Linear Algebra Math Algebra Linear Equations

07/20/20

Fraction word problem
Alex's age now is 6/7 that of Kate's. Eight years ago, Alex's age was 2/7 as much as Kate's present age. Kate is now k years old. What is the value of k?
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Linear Algebra Math Algebra Linear Equations

07/20/20

Fraction word problem
A fraction is equivalent to 6/7. It's denominator is 5 more than its numerator. What is the denominator of this fraction?
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Linear Algebra Math Algebra Linear Equations

07/20/20

Airplane rate of change problem
Flying against the wind, a plane travels 2,400 km in 6 hours. Flying with the wind, the plane travels the same distance in 4 hours. In the absence of wind, the speed of the plane is k kilometers... more
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Linear Algebra Math Algebra Linear Equations

07/20/20

Algebraic word problem
The sum of the digits of a 2-digit number is 7. If the digits are reversed the new number is 32 more than 10 times the tens' digit of the original number. What is the original number?
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Linear Algebra Math Algebra Linear Equations

07/20/20

Age difference word problem
Julia's age now is half that of Nicola's. One year from now, Julia's age will be three-fourth of Nicola's present age. Nicola is now n years old. What is the value of n?
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Linear Algebra Math Algebra Linear Equations

07/20/20

Airplane rate of change problem

Flying against the wind, a plane travels 2,000 km in 5 hours. Flying with the wind, the plane travels the same distance in 4 hours. The speed of the wind is s kilometers per hour. What is the value... more
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Linear Algebra Linear Equations Finite Math

07/19/20

Solving Systems of Equation with row operations
3x - y + 5z = 14 2x + 3y + 4z = 7 x + y + z = 2
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Linear Algebra Linear Equations Finite Math

07/19/20

Solving Systems of equations with row operations
2x - y - 5z = 11 x + 3y + 2z = 14 3x + 8y + 7z = 35
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Linear Algebra

07/18/20

Given A has the same row space as rref A, do they both have the same basis in general
In Strang’s book in the section on the Dimensions of the Four Subspaces, he says, “ A has the same row space as R. Same dimension r and same basis.“i believe they have the same dimension and same... more
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Linear Algebra

07/17/20

Customers at a supermarket have been increasing at...
Customers at a supermarket have been increasing at a linear rate. In 2011 the number was 570,000. In 2012 was 730,000 if y represent the number of customers visiting the supermarket per year and x... more
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