Practical Problem: Boat Speed and River Currents
A word problem involving rate, time, and distance is solved step-by-step using the elimination method.
Subject: form
Transcript: PLUS 2C EQUALS THE DISTANCE TRAVELED DOWNSTREAM, 30 MILES. NOW WE HAVE TWO EQUATIONS WITH TWO UNKNOWNS. BOTH EQUATIONS ARE IN THE SAME FORM AND THE C
Nature of Contract Law, The
An introduction to contract law. This clip teaches what a contract is, how contract law has evolved over time, what elements are essential in a valid contract, and how contracts can be classified.
Subject: form
Transcript: EXCHANGE FOR A PROMISE. OFTEN, THIS TAKES THE FORM OF MONEY. BUT CONSIDERATION CAN ALSO BE ANOTHER PROMISE, AN ACT, OR EVEN REFRAINING FROM DOING SOMETHING
Banking Services
The services of modern banks and savings institutions with an introduction to checking accounts, check registers, credit card transactions and bank statements.
Subject: form
Transcript: COSTS THE BUSINESS MONEY IN THE FORM OF A FEE PAID TO THE BANK THAT ISSUED THE CARD. LET'S SAY THAT A RETAIL STORE HAS A TOTAL OF $100,000 IN CREDIT CARD
When the Elimination Method is Easiest
How to decide whether substitution or elimination is the better method for solving a system of equations when both equations are in the same form and
Subject: form
Transcript: . LET'S TRY A DIFFERENT APPROACH. BOTH EQUATIONS IN THIS SYSTEM ARE IN THE SAME FORM. THAT SUGGESTS ELIMINATION. TO ELIMINATE A VARIABLE, WE'D MULTIPLY
When Elimination and Substitution are Equally Convenient
When a system of equations gives no clear direction toward either the substitution method or the elimination method, use the one you prefer.
Subject: form
Transcript: NARRATOR: LET'S LOOK AT ONE MORE SYSTEM. THE EQUATIONS AREN'T IN THE SAME FORM, SO ELIMINATION ISN'T AN OBVIOUS METHOD. SUBSTITUTION DOESN'T SEEM