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McGraw Hill Glencoe Algebra 1, 2012

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McGraw Hill Glencoe Algebra 1, 2012 View details

6. Ratios and Proportions

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Exercise 14 Page 115

You can use cross products to determine if the ratios are equivalent.

Yes.

Practice makes perfect

To determine if the given ratios are equivalent, we will set them equal to one another and use cross products. If the resultant equation is true, then the ratios are equivalent.

39.68/60.14? =6.4/9.7

Cross multiply

39.68(9.7)? =60.14(6.4)

Multiply

384.896=384.896

Because the cross products resulted in a true statement, we know that the pair of ratios are equivalent.

Subchapter links

Check Your Understanding p.114

Practice and Problem Solving p.115-116

H.O.T. Problems p.116

Standardized Test Practice p.117

Spiral Review p.117

Skills Review p.117