176 Videos for "systems of equations"

Rate Word Problems  Problem 2
Math › Algebra › Word Problems Using Systems of Equations
How to solve word problems involving air or water current. 
Rate Word Problems  Problem 1
Math › Algebra › Word Problems Using Systems of Equations
How to solve word problems about airplanes leaving opposite cities and moving toward each other. 
Percent Concentrations  Problem 4
Math › Algebra › Word Problems Using Systems of Equations
How to write a system and solve chemistry percent mixture problems 
The Cross Product of Vectors  Problem 3
Math › Precalculus › Systems of Linear Equations and Matrices
How to find the equation of a plane that contains three given points. 
Percent Concentrations  Concept
Math › Algebra › Word Problems Using Systems of Equations
How to solve word problems about mixing two liquids with different percent concentrations. 
Percent Concentrations  Problem 3
Math › Algebra › Word Problems Using Systems of Equations
How to solve word problems about mixing two liquids with different percent concentrations and one of the ingredients is "pure." 
Percent Concentrations  Problem 1
Math › Algebra › Word Problems Using Systems of Equations
How to solve word problems about mixing two liquids with different percent concentrations and the quantity of one ingredient is unknown. 
Mixture Problems  Concept
Math › Algebra › Word Problems Using Systems of Equations
How to solve word problems when mixing two quantities with different prices. 
Sum of Digits  Concept
Math › Algebra › Word Problems Using Systems of Equations
How to solve a problem when asked to switch the digits of a 2digit number. 
Sum of Digits  Problem 2
Math › Algebra › Word Problems Using Systems of Equations
How to solve a problem when asked to switch the digits of a 2digit number and one digit is zero. 
Age Word Problems  Problem 3
Math › Algebra › Word Problems Using Systems of Equations
Techniques for solving word problems that involve changing relative ages 
Work Word Problems  Problem 3
Math › Algebra › Word Problems Using Systems of Equations
Algorithm for solving "work" word problems including shared job and individual job completion times 
Rate Word Problems  Problem 5
Math › Algebra › Word Problems Using Systems of Equations
Solving for time in a distance = rate times time word problem 
Rate Word Problems  Problem 6
Math › Algebra › Word Problems Using Systems of Equations
Solving a rate word problem where there are two travel rates 
Mixture Problems  Problem 2
Math › Algebra › Word Problems Using Systems of Equations
How to solve word problems when mixing two quantities with different prices and the amount of one ingredient is unknown. 
Mixture Problems  Problem 1
Math › Algebra › Word Problems Using Systems of Equations
How to solve word problems when mixing two quantities with different prices and the price of the mix is unknown. 
Sum of Digits  Problem 1
Math › Algebra › Word Problems Using Systems of Equations
How to solve a problem when asked to switch the digits of a 2digit number and the result is more than the original. 
Percent Concentrations  Problem 2
Math › Algebra › Word Problems Using Systems of Equations
How to solve word problems about mixing two liquids with different percent concentrations and the concentration of the mixture is unknown. 
Rectangular Coordinate System  Concept
Math › Algebra 2 › Graphs of Linear Equations
How to talk about the rectangular coordinate system. 
Applications of Quadratic Equations  Problem 4
Math › Algebra › Quadratic Equations and Functions
Use of a graphing calculator to solve quadratic systems of equations graphically.