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

Chapter Review

Continue to next subchapter

Exercise 3 Page 417

Think of a number that is 1.69 when it is raised to the second power.

± 1.3

Practice makes perfect

We want to find both square roots of 1.69. ± sqrt(1.69)We need to think of a number that is 1.69 when it is raised to the second power. We can see that this number is 1.3.

1.3^2

Calculate power

1.69 ✓

This means that the square roots of 1.69 are ± 1.3. ± sqrt(1.69) = ± 1.3

Subchapter links

1 Finding Square Roots p.417

2 The Pythagorean Theorem p.417

3 Finding Cube Roots p.418

4 Rational Numbers p.418

5 Irrational Numbers p.419

6 The Converse of the Pythagorean Theorem p.419