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Download an equation that states two ratios are equal is called a proportion
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Transcript
AN EQUATION THAT STATES TWO RATIOS ARE EQUAL IS CALLED A PROPORTION. THE NUMBERS A AND D ARE CALLED THE EXTREMES. NUMBERS B AND C ARE CALLED THE MEANS. TO SOLVE A PROPORTION YOU TAKE THE PRODUCT OF THE EXTREMES AND SET IT EQUAL TO THE PRODUCT OF THE MEANS. 1 2 3 4 5 THE GEOMETRIC MEANS OF TWO POSITIVE NUMBERS A AND B IS THE POSITIVE NUMBER X THAT SATISFIES SO, X2 = AB AND X = √AB. IN OTHER WORDS, TO FIND THE GEOMETRIC MEAN OF TWO POSITIVE NUMBERS MULTIPLY THE NUMBERS AND THEN TAKE THE SQUARE ROOT THE PRODUCT. FIND THE GEOMETRIC MEAN OF 45 AND 5. 6 FIND THE GEOMETRIC MEAN OF THE TWO NUMBERS. 1. 3 AND 27 2. 40 AND 5 3. 6 AND 15 7 8 9 ASSIGNMENT: PRACTICE 6.1B (ALL) WHAT IS NOT FINISHED DURING CLASS TODAY IS TO BE COMPLETED FOR MONDAY. BE SURE TO SHOW WORK!! 10
