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Glencoe Math: Course 3, Volume 2

GM

Glencoe Math: Course 3, Volume 2 View details

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Exercise 1 Page 504

Solve for the variable by using the Cross Products Property.

3.5

Practice makes perfect

To solve the proportion, we will use the Cross Products Property.

x/15 = 7/30

Cross multiply

30x = 15(7)

.LHS /30.=.RHS /30.

30x/30 = 15(7)/30

SplitIntoFactors

Split into factors

30x/30 = 15(7)/2 * 15

CancelCommonFac

Cancel out common factors

30x/30 = 15(7)/2 * 15

Simplify quotient

x = 7/2

Calculate quotient

x = 3.5

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Quick Check p.504