1,382 Answered Questions for the topic Linear Equations

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,...
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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.

Linear Equations Linear Algebra

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...
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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?

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?

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?

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?

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...
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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?

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?

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...
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07/19/20

#### Solving Systems of Equation with row operations

3x - y + 5z = 14 2x + 3y + 4z = 7 x + y + z = 2

07/19/20

#### Solving Systems of equations with row operations

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

07/10/20

#### PLS HELP :)) i am not sure how to solve this problem

The cost of making 11 tables is $1,140. The cost of making 25 tables is $1,560. Assume this is a linear relationship.What is the cost per table? Write a linear equation that tells you the total...
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07/07/20

#### system of linear equation

Juan invests a total of $27,000 in two accounts. The first account earned a rate of return of 9% (after a year). However, the second account suffered a 2% loss in the same time period. At the end...
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#### Systems of linear equation

A bank loaned out $15,000, part of it at the rate of 13% annual interest, and the rest at 11% annual interest. The total interest earned for both loans was $1,720.00. How much was loaned at each rate?
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Linear Equations Inequalities

07/02/20

#### Solving a percent mixture problem using a linear equation

Two factory plants are making TV panels. Plant A produced 15,000 panels. 10% of the panels from Plant A and 3% of the panels from Plant B were defective. How many panels did Plant B produce, if the...
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Linear Equations

06/30/20

#### If the product of a number and -9 is subtracted from the number, the result is 8 more than the number. Find the number.

Linear Equations

06/27/20

#### Solving a percent mixture problem using liner equation

two factory plants are making tv panels. yesterday plant A produced twice as many panels as plant B. five percent of the panels from plant A and 2% of the panels from plant B were defective. how...
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Linear Equations

06/19/20

#### Harry took a loan from the bank. D represents Harry's remaining debt (in dollars) after t months. D=-200t+9000 What was the size of Harry’s loan?

#### Solve the equation...

X^2 + y^2 = 10 X^2 - 5xy + 6y^2Please solve this equation and what is the class of this equation?

#### Math Linear Equations, Finding two variables

A test has twenty questions worth 100 points. The test consists of True/False questions worth 3 points each and multiple choice questions worth 11 points each. How many multiple choice questions...
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Linear Equations Linear Algebra

06/16/20

#### Application of linear inequalities

For his mobile phone service, John pays a monthly fee of $40 plus $15 for each 1 GB of data (rounded up) over his 8 GB of data that comes with his plan. For his monthly charge before taxes to be at...
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