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September 4, 2015

Homework Help: Maths;Check Answers Please :P

Posted by Electro on Friday, January 17, 2014 at 6:37pm.

1. Simplify. 5^1(3^2)

My answer: 1/45

3. Write in scientific notation. 0.0042

My answer: 4.2 X 10^-3

4. Write in standard notation. 6.12 10^3

my answer: 6,120

5. Simplify. Write in scientific notation. 0.5(8 10^5)

My answer: 4 x 10^5

6. Simplify. Write in scientific notation. (9 10^3)^2

my answer is: 8.1 x 10^5

8. Is the following statement always, never, or sometimes true?

A number raised to a negative exponent is negative.

My answer is: sometimes



9. Simplify (4xy^2)^3(xy)^5

Idk this one


10. Simplify (2t^3)^3(0.4r)^2

idk this one

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