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Big Ideas Math: Modeling Real Life, Grade 8

BI

Big Ideas Math: Modeling Real Life, Grade 8 View details

4. Rewriting Equations and Formulas

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Exercise 8 Page 27

Apply inverse operations to isolate r.

r=C/2π

Practice makes perfect

To solve the given formula for r, we will use the Properties of Equality to apply inverse operations on the formula. Remember, only like terms can be combined.

C=2π r

.LHS /2π.=.RHS /2π.

C/2π=2π r/2π

Calculate quotient

C/2π=r

Rearrange equation

r=C/2π

Subchapter links

Try It p.26-27

Self-Assessment for Concepts & Skills p.27

Self-Assessment for Problem Solving p.28

Review & Refresh p.29

Concepts, Skills, & Problem Solving p.29-30