Practical Problem: Two solutions for a Pool Problem
A work problem is presented to determine how long it will take to fill a pool that has an open drain.
Subject: fraction
Transcript: . SINCE THE DRAIN IS OPEN WHILE WATER IS BEING PUMPED IN, A GREAT DEAL OF WATER WILL PASS THROUGH THE POOL BEFORE IT IS FILLED. SO WE CAN FIND THE FRACTION
Factoring before Multiplying Rational Expressions
If a rational expression is more complicated, factoring before multiplying might be indicated.
Subject: fraction
Transcript: HAS THE FACTORS N AND N PLUS 2. THE DENOMINATOR OF THE FIRST FRACTION CAN'T BE FACTORED. THE FACTORS OF THE NUMERATOR IN THE SECOND EXPRESSION ARE N
Introduction to Inequalities and Solution Sets
Inequality statements are defined, solution sets explained, the use of a number line demonstrated, and the less than and greater than symbols illustrated.
Subject: fraction
Transcript: ARE IN THE SOLUTION SET. THAT INCLUDES FRACTIONS AND DECIMALS. HERE'S ANOTHER INEQUALITY. IT SAYS THE REVERSE OF OUR LAST STATEMENT. THE SYMBOL HERE
Rewriting the Formula for Temperature Conversion
Rewriting the formula for temperature conversion to solve for F.
Subject: fraction
Transcript: 'S GET RID OF THE FRACTION. WE CAN DO THAT BY MULTIPLYING BOTH SIDES BY 9. THAT GIVES US 9C EQUALS 5 TIMES F MINUS 32. CARRYING OUT THE MULTIPLICATION, THE
Practical Problem: Finding Average Speed
Complex fractions often appear in formulas used to solve problems. A practical problem involving the rate, time, and distance formula illustrates
Subject: fraction
Transcript: COMPLEX FRACTIONS OFTEN APPEAR IN FORMULAS USED TO SOLVE PROBLEMS. HERE'S AN EXAMPLE. NE WEEKEND THE JACKSON FAMILY MAKES A TRIP TO VISIT AUNT LUCY
Practical Problem: Finding the Speed of the Wind
A practical problem involving two airplanes requires finding their true speed after factoring in wind speed. The rate, time, and distance formula is used to solve the problem.
Subject: fraction
Multiplying by the Least Common Denominator to Get a Quadratic Equation
The steps involved in solving an equation by multiplying by the least common denominator to get a quadratic equation and checking the solution are detailed.
Subject: fraction
Transcript: THE EQUATION. WE CAN CANCEL THE X PLUS 8'S HERE. THAT LEAVES 3X TIMES X PLUS 13. NOW WE HAVE AN EQUATION WITH NO FRACTIONS AND NO RATIONAL EXPRESSIONS
Fractions Raised to a Power
Simplifying expressions in which a fraction is raised to a power.
Subject: fraction
Transcript: FRACTION RAISED TO A NEGATIVE POWER IS EQUAL TO THE RECIPROCAL OF THE SAME FRACTION RAISED TO A POSITIVE POWER. KEEP THAT IN MIND WHEN YOU SIMPLIFY THIS
Practical Problem: The Height of a Stack of Newspapers
Using the slope-intercept form of equation, a practical problem involving the rate of growth of a stack of newspapers is calculated.
Subject: fraction
Transcript: FRACTIONS OR DECIMALS. NOW WE CAN FIND THE SLOPE. 56.25 MINUS 48.75. 10 MINUS 7. SUBTRACT. REDUCE. THE STACK OF NEWSPAPERS INCREASES 2 AND 1/2 INCHES A DAY. 2
Fractions, Decimals, and Percents
Both business people and consumers must learn to work with fractions, decimals and percents in addition, subtraction, multiplication and division.
Series: Fractions, Decimals, And Percents
Subject: fraction
Transcript: 'VE SO FAR GOTTEN ALONG WITHOUT UNDERSTANDING THE NON-WHOLE NUMBER FORMS WE COMMONLY USE. FRACTIONS, DECIMALS, AND PERCENTS. OF COURSE, YOUNG CHILDREN OF