Monday

December 22, 2014

December 22, 2014

Posted by **Joy** on Tuesday, January 13, 2009 at 11:23pm.

7. 72 - 28 Answer: 12 ??

8. 48 + 75 Answer: 93

9.(310) Answer: 19 + 610

10. 27/64 (Fractions) Answer 33/8 ??

11. 1020 - 380 Answer: 105

12. 6/49 Fractions) Answer: 6/7 ??

13. 32 * 14 Answer:stays the same ??

14. 6/50 Answer: 103

15. 30 * 212 Answer: 30 * 43

If I got any of these wrong, can someone please tell me how to do them correctly?

- 8th Grade Algebra-Radicals:Answer Check -
**Reiny**, Wednesday, January 14, 2009 at 9:04amI will assume your means 'square root'

4. 311 + 411 Answer: 811 --- I recall 3+4 used to be 7, not 8

7. 72 - 28 Answer: 12 ??

---- 7√2 - 2(2√2) = 3√2

9.(310) Answer: 19 + 610 --- how did you get that ????

---- 3√10 stays that way

11. 1020 - 380 Answer: 105 --- NO

10(√4)(√5) - 3(√16)(√5) = 20√5 - 12√5 = 8√5

13. 32 * 14 Answer:stays the same ?? --- no

----- 3√2 * √14 = 3√28 = 3(√4)(√7) = 6√7

14. 6/50 Answer: 103 --- not clear, is the 50 part of the square root ?

If so, then √(6/50) = √(3/25) = (√3)/5

If it is (√6)/50 then it stays that way

15. 30 * 212 Answer: 30 * 43 -- don't understand what you did

√30 * 2√12 = 2√360 = 2(√9)(√4)(√10) = 24√10

**Answer this Question**

**Related Questions**

8th Grade Algebra-Radicals:Answer Check - Write each expression in simplest form...

Algebra II - Simplify: (s^711)/(s11) I think it is s^811 Is this correct??

algebra 2 - are these answers right? 1. -121 = i11 2. -2-144 = 2i144 = ...

math - 10(11-7) can you help me multiply and simplify

math - 10(11-7) can you help me multiply and simplify

8th Grade Algebra: Answer Check #2 - Add or Subtract (Radicals) { this means ...

Math - Can you please check these problems? 1. 528+245=_____ I got 107+6...

advanced math - suppose that a1, a2, a3, ..., ak forms an arithmetic sequence. ...

8th Grade Algebra-Radicals:Answer Check - Change each decimal to a fraction in ...

8th Grade Algebra: Answer Check - Find the length of the 3rd side of each right ...