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Big Ideas Math Geometry, 2014

BI

Big Ideas Math Geometry, 2014 View details

Maintaining Mathematical Proficiency

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Exercise 9 Page 461

Solve for the variable by using the Cross Products Property.

x=32

Practice makes perfect

To solve the proportion, we will start by using the Cross Products Property.

4/x=7/56

Cross multiply

4* 56=x*7

Multiply

224=7x

Rearrange equation

7x=224

From here, we will continue solving for x by using the Properties of Equality.

7x=224

.LHS /7.=.RHS /7.

x=32

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Exercises p.461