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Pearson Geometry Common Core, 2011

PG

Pearson Geometry Common Core, 2011 View details

Chapter Review

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Exercise 8 Page 481

You can solve for the variable by using cross products.

55/4 or 133/4

Practice makes perfect

To solve the proportion, we will start by using cross products, then we will use the Properties of Equality.

6/11=15/2x

Cross multiply

6(2x)=11(15)

Multiply

12x=165

.LHS /12.=.RHS /12.

x=165/12

a/b=.a /3./.b /3.

x=55/4

Here, we know that x= 554, but we can also write this fraction as a mixed number. x=55/4 ⇔ x=133/4