body{margin:0;} noscript{z-index: 10000; position: fixed; display: block; height: 100%; width: 100%; background: #fff;} noscript .fa{font-size: 40px; display:block; color: #daa520;} noscript div{margin-top: 6%; padding-left: 20px; padding-right: 20px; text-align: center;} ! You must have JavaScript enabled to use this site.

Big Ideas Math: Modeling Real Life, Grade 8

BI

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

4. Rewriting Equations and Formulas

Continue to next subchapter

Exercise 6 Page 26

Apply inverse operations to isolate h.

h=S-2π r^2/2π r

Practice makes perfect

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

S=2π r^2+2π rh

LHS-2π r^2=RHS-2π r^2

S-2π r^2=2π r^2+2π rh - 2π r^2

Subtract term

S-2π r^2=2π rh

.LHS /2π r.=.RHS /2π r.

S-2π r^2/2π r=2π rh/2π r

Calculate quotient

S-2π r^2/2π r=h

Rearrange equation

h=S-2π r^2/2π r

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