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April 18, 2015

Homework Help: Algebra 2 Answer Check

Posted by Victoria on Tuesday, September 2, 2014 at 5:50pm.

Simplify by rationalizing each denominator.

1. 2/√3

A: 2√3 / 3

2. -18/√6

A: -3√6

Add or subtract.

3. 4√3 - 9√3

A: -5√3

4. √8 - 15√2

A: -13√2

5. √45 + √20

A: 5√5

6. 2√48 + 2√12

A: 12√3

Simplify each expression.

7. √162

A: 9√2

8. √50/9

A: (5√2)/ (3)

9. (√288) / (√8)

A: 6

10. (2√126) / (√14)

A: 6

11. The largest mosaic in the world is on the walls of the central library of the Universidad Nocional Autónoma de México in Mexico City. The mosaic depicts scenes from the nation's history and covers an area of 4000 m^2. If the entire mosaic were on one square wall, what would its dimensions be?

A: The dimensions would be 20√10 m^2 by 20√10 m^2.

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