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McGraw Hill Integrated II, 2012

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McGraw Hill Integrated II, 2012 View details

Practice Test

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Exercise 3 Page 611

Solve for the variable by using cross products.

± 15

To solve the proportion, we will start by using cross products. Then, we will continue solving for x by using the Properties of Equality.

4x/15=60/x

Cross multiply

4x * x=15 * 60

Multiply

4x^2=900

.LHS /4.=.RHS /4.

x^2=225

sqrt(LHS)=sqrt(RHS)

x=± 15

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