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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 10 Page 461

Solve for the variable by using the Cross Products Property.

x=9.2

Practice makes perfect

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

10/23=4/x

Cross multiply

10* x=23*4

Multiply

10x=92

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

10x=92

.LHS /10.=.RHS /10.

x=92/10

Write as a decimal

x=9.2

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Exercises p.461