Posted by **Maya** on Wednesday, September 18, 2013 at 8:52pm.

Here are the questions I need help with, please help.

[(1/4)^-3 divide sign (1/4)^2]^-2

I got (1/4)^10 but I got it wrong

(3^1/2)^3

_______ I got 1/216

9

(-56r^2)divide sign (-7r^2)= I got 8r

x(y)(x)(2y)

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

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 0.0025simplify [(a^2bc^4)(ab^3c^2)]^2

___________________

(b^2c^5)^3

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

Thank you so much

- Math Ms. Sue -
**Reiny**, Wednesday, September 18, 2013 at 10:25pm
[(1/4)^-3 ÷ (1/4)^2]^-2

inside the square brackets we are dividing powers with the same base, so keep the base and subtract the exponents

= [ (1/4)^(-3 -2) ]^2

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

= (1/4)^-10

= 4^10

(3^1/2)^3

_______

9

= 3^(3/2) / 3^2

= 3^(3/2-2)

= 3^(-1/2) = 1/3^(1/2) or 1/√3

(-56r^2) ÷ (-7r^2)

= (-56r^2)/(-7r^2)

= 8

How did you get 8r, there is an r^2 on top and r^2 at the bottom so they divide out to get 1

For the rest of the questions, I can't tell where one ends and the next one begins

for all the questions beginning with "simplify", did you not notice that in each case you are taking the square root of a perfect square ?

e.g.

simplify 3√81 = 3(9) = 27

etc

## Answer This Question

## Related Questions

- Math - Here are the questions I need help with, please help. [(1/4)^-3 divide ...
- Math Please Urgent - Here are the questions I need help with, please help. [(1/...
- 6th grade Math - I got a problem wrong and I don't know why. Here it is: A ...
- Math estimate with benchmark - Could you please check ifI have these right? i ...
- MATH - i need to write each expression as a product of the same factor: * = ...
- math exponents - i need to write each expression as a product of the same factor...
- math - Jen, I will attempt to write the others out. #3)ADD: -57 + (-22) I got -...
- Quick math help - Can someone please check my math Hw? Thank you!! Solve each ...
- Math add subtract fractions - Can you check my answers: 2) 5/8 - 1/4 i got: 3/8 ...
- Math mrs sue - Can you check these? 18% of 90 is what number? i got 16.2 what ...

More Related Questions