663 Answered Questions for the topic linear algebra

Linear Algebra Finite Math

15h

#### Systems of Inequalities

Let Z = 5x + 11y. For the shaded region below where A = (2, 1), B = (10, 1), C = (8, 5), and D = (2, 9). max Z = min Z =

#### 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...
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#### 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...
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3d

#### 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,...
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3d

#### 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,...
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3d

#### 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)}

3d

#### 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.

#### 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...
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Linear Algebra Linear Equations

3d

#### 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...
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Linear Algebra

6d

#### 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

Linear Algebra

9d

#### 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.

#### 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...
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#### 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?

#### 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?

#### 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?

#### 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?

#### 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...
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#### 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?

#### 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?

#### 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...
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14d

#### Solving Systems of equations with row operations

2x - y - 5z = 11 x + 3y + 2z = 14 3x + 8y + 7z = 35

Linear Algebra

15d

#### 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...
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