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December 20, 2014

December 20, 2014

Posted by **Maya** on Wednesday, September 18, 2013 at 10:39pm.

(12) (10xy^3) (3x^2y^2) (5x) (2y)

I don't know how to do any of these:

simplify sqaure root of 160000

simplify sqaure root of 0.04

simplify 3 * square root 81

simplify square root of 900

simplify square root of 0.0025

simplify [(a^2bc^4)(ab^3c^2)]^2

___________________

(b^2c^5)^3

what is 4^-5/2 expressed as a radical with positive exponents

- Math To: Reiny -
**Reiny**, Wednesday, September 18, 2013 at 10:50pm(12) (10xy^3) (3x^2y^2) (5x) (2y)

= mmmmh

= 3600 x^3 y^6

For the next 4, I showed you how to do these.

Did you read my reply?

[(a^2bc^4)(ab^3c^2)]^2 / (b^2c^5)^3

= [a^3 b^4 c^6]^2 / (b^6 c^15)

= (a^6 b^8 c^12) / (b^6 c^15)

= a^6 b^2 / c^3

- Math To: Reiny -
**Maya**, Wednesday, September 18, 2013 at 10:53pmfor this one:

12) (10xy^3) (3x^2y^2) (5x) (2y)

I got (12) 18x^2 3y^5

and do you know what 4^-5/2 expressed as a radical with positive exponents would be, I did read your reply but I keep getting those questions wrong so can you please show me how to do them

- Math To: Reiny -
**Maya**, Wednesday, September 18, 2013 at 10:56pmfor the 4^-5/2 I got 1/ 2* square root of 4^5

- Math To: Reiny -
**Reiny**, Wednesday, September 18, 2013 at 11:27pm<<<for this one:

12) (10xy^3) (3x^2y^2) (5x) (2y)

I got (12) 18x^2 3y^5 >>>

By whatever means can you get that ???

(btw, I did this one for you , look about 20 line up)

let me rearrange the factors for you ...

(12)(10)(3)(5)(2) (x)( x^2)( x)( y^3)( y^2)( y)

= 3600 x^4 y^6 , looks like I missed one of the x's in my first solution

- Math To: Reiny -
**Maya**, Wednesday, September 18, 2013 at 11:31pmI thought you would add the x and y's ? And can you please help me with these: I begging you!!!! I've tried so much and can't do it!!!

simplify sqaure root of 160000

simplify sqaure root of 0.04

simplify 3 * square root 81

simplify square root of 900

simplify square root of 0.0025

- Reiny -
**Reiny**, Wednesday, September 18, 2013 at 11:31pmin 4^-5/2

is it the way you typed it, or is it 4^(-5/2)

I have a feeling it is 4^(-5/2)

= (1/4)^(5/2)

= [ (1/4)^(1/2) ]^5

= √(1/4)^5

= (1/2)^5

= 1/32

test it with your calculator

- Math To: Reiny -
**Maya**, Wednesday, September 18, 2013 at 11:35pmits to the power of -5/2 and I'm supposed to put it in a radicand so I think im right? and please help me with my other questions!!! I have tried so much

- Math To: Reiny -
**Reiny**, Wednesday, September 18, 2013 at 11:43pmsimplify sqaure root of 160000 = 400

simplify sqaure root of 0.04 = .2

simplify 3 * square root 81 = I did this one

simplify square root of 900 = 30

simplify square root of 0.0025 =.05

--- all these could have simply been obtained by pushing the buttons on a calculator

Your 4^(-5/2) ....

I also did this for you, look about 5 or 6 lines up.

Again you could verify my answer on a calculator.

enter:

4

y^{x}

2.5

+/-

=

to get .03125 which is 1/32, my answer

- Math To: Reiny -
**Maya**, Wednesday, September 18, 2013 at 11:45pmI cant do it this way, I have to do it this way: for exaple: square root of 50=

5*square root of 2.

- Math To: Reiny -
**Reiny**, Thursday, September 19, 2013 at 12:02amOk, one more shot at explaining it ...

4^(-5/2)

= (4^(1/2) )^-5

= √4 ^-5

= 2^-5

= 1/2^5

= 1/32 , as before

- Math To: Reiny -
**Maya**, Thursday, September 19, 2013 at 12:07amno im talking about the simplifying questions, I have to do it this way

for exaple: square root of 50=

5*square root of 2.

cant just write a number down.

- Math To: Reiny -
**Maya**, Thursday, September 19, 2013 at 12:22amNevermind, Thank you for all your help, and I am just going to write the numbers. Thanks so much :)

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