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May 22, 2015

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

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.

- Algebra 2 Answer Check -
**Damon**, Tuesday, September 2, 2014 at 6:02pm1. 2/√3

A: 2√3 / 3 yes

2. -18/√6

A: -3√6 yes

Add or subtract.

3. 4√3 - 9√3

A: -5√3 yes

4. √8 - 15√2

A: -13√2 yes

5. √45 + √20

A: 5√5 yes

6. 2√48 + 2√12

= 2 sqrt (4*12) + 2 sqrt 12

= 4 sqrt 12 + 2 sqrt 12

= 6 sqrt 12

= 12 sqrt 3

A: 12√3 so yes

Simplify each expression.

7. √162

A: 9√2 yes

8. √50/9

A: (5√2)/ (3) I guess so if it is really sqrt (50/9) and not (1/9) sqrt 50 as you wrote it

9. (√288) / (√8)

A: 6 yes

10. (2√126) / (√14)

A: 6 yes

- Algebra 2 Answer Check -
**Victoria**, Tuesday, September 2, 2014 at 6:04pmWhat about #11?

- Algebra 2 Answer Check -
**Damon**, Tuesday, September 2, 2014 at 6:04pm11 yes

- Algebra 2 Answer Check -
**Victoria**, Tuesday, September 2, 2014 at 6:04pmThank you!