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Maths;Check Answers Please :P

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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

  • Maths;Check Answers Please :P -

    can anyone help?

  • Maths;Check Answers Please :P -

    1-5 , all good

    #6.
    (9 × 10^–3)^2
    = (9 × 10^–3)(9 × 10^–3)
    = 81 x 10^-6
    = 8.1 x 10^-5

    #8 , ok
    #9
    (4xy^2)^3(xy)^5
    = (64x^3 y^6)(x^5 y^5)
    = 64 x^8 y^11

    10.
    (2t^-3)^3 (.4r)^2
    = 8 t^-9 (.16r^2
    = 12.8 r^2 / t^9

  • Maths;Check Answers Please :P -

    1. b
    2. a
    3. c
    4. a
    5. d
    6. a
    7. b
    8. c
    9. a
    10. c

  • Maths;Check Answers Please :P -

    @! is correct 100% on the more multiplication proerties and exponents Quiz for Algebra 1B on Connections Academy! Good luck everyonee

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