Friday

October 31, 2014

October 31, 2014

Posted by **lee** on Sunday, October 31, 2010 at 11:00pm.

1. Slove for X, wher X is the real number, square root 5x + 9= square root 9x + 13= 27

2. Find the value: ^3 square root -27= 9

3. Write the following in simplified radical form ^4 square root 80= 4

PLEASE HELP QUICKLY!!

- Algebra -
**Reiny**, Sunday, October 31, 2010 at 11:08pm1 . I assume you meant

√(5x+9) = √(9x+13)

if so, then square both sides

5x + 9 = 9x + 13

-4x = 4

x = -1, the answer checks in my equation

2. I can't figure out what you are saying.

are you finding the cuberoot of -27 ?

if so, the cuberoot of -27 = -3

3 again, is that supposed to the fourth root of 80 ?

80^(1/4) = (16)^(1/4) (5)^(1/4)

= 2 times cuberoot of 5

- Algebra -
**Reiny**, Sunday, October 31, 2010 at 11:10pmlast line should have said

2 times fourthroot of 5

- Algebra -
**lee**, Sunday, October 31, 2010 at 11:15pmTHANKS AGAIN Reiny!!

**Answer this Question**

**Related Questions**

algebra - could someone please check these roblems for me and if they are not ...

Algebra-Mathmate or Reiny or Dr. Bob, please check - I have two short questions...

Chemistry(Please check) - .50 - x / x = 3.20e-1 I need to solve for x. I was ...

Algebra-please check - Please check these: 1.When the fraction 2/3 is used as ...

Please check-Reiny - Could you check these two problems? 3sqrt (y+2) = 3 is y = ...

Algebra-Please check - Please check- sqrt of 2x + 15 = x Answers: -5.3 -3.5 -3 5...

English - 1. Hello. May I speak to Tom? Speaking. Who's this? Hi,Tom. This is ...

To Reiny - Reiny could you please check my Calculus post below, it says Calculus...

Algebra-Can you please check this Reiny - Can you check this: x^-3y^2/x^2y^-4 I ...

math (Reiny please) - how would i do these problems: 6. xsquared + 2x -7 =0 7. ...