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anonymous

  • 5 years ago

The radius of the Milky Way Galaxy is about 50,000 light-years. Write this number in scientific notation. What is the radius of the Milky Way Galaxy in miles? Write your final answer in scientific notation and show at least one step of your work.

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  1. anonymous
    • 5 years ago
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    Tully00, we are here to help you. However, we cannot make you homework. You have to try first, then if you have a question, we can help you. You have to try it first!

  2. anonymous
    • 5 years ago
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    I have tried to work them out. what i got for the first one was 5 X 10 4th power

  3. anonymous
    • 5 years ago
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    That is the correct answer. Try 0.000245 now

  4. anonymous
    • 5 years ago
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    2.45 X 10 -4th power

  5. anonymous
    • 5 years ago
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    exactly. That is the answer. I thing you are already done with scientist notation :) Do you have any question?

  6. anonymous
    • 5 years ago
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    yes the question that I was having trouble with was the second one. How do I find the radius

  7. anonymous
    • 5 years ago
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    in miles

  8. anonymous
    • 5 years ago
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    I need 2 minutes to get the answer. Wait please

  9. anonymous
    • 5 years ago
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    If the radius of the Milky Way Galaxy is about 50,000 (5x10^4) light-years, and 1 light-year is 5,878,630,000 (5.88x10^12), then: \[r=(5x10^{4} Light-years)*(5.88x10^{12} miles/1 light-year)\] then r=29.4x10^16 r=2.94x10^17 This is the answer

  10. anonymous
    • 5 years ago
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    Light-year in the numerator cancel with the numerator in the denominator, so you get the radius in miles

  11. anonymous
    • 5 years ago
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    got it ttully00?

  12. anonymous
    • 5 years ago
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    yeah it seems kind of complicated.

  13. anonymous
    • 5 years ago
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    what part you dont understand?

  14. anonymous
    • 5 years ago
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    how did you get the 29.4

  15. anonymous
    • 5 years ago
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    Multiplying 5x10^4 with 5.88x10^12. You have to multiply 5 and 5.88 first so you get 29.4. After that you have to multiply 10^4 and 10^12 = 10^4 (for this multiplication the base (10) remains and the exponents are added (4+12=16))

  16. anonymous
    • 5 years ago
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    There is a mistake in the last post. Read this instead :) Multiplying 5x10^4 with 5.88x10^12. You have to multiply 5 and 5.88 first so you get 29.4. After that you have to multiply 10^4 and 10^12 = 10^16 (for this multiplication the base (10) remains and the exponents are added (4+12=16))

  17. anonymous
    • 5 years ago
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    got it now?

  18. anonymous
    • 5 years ago
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    O ok

  19. anonymous
    • 5 years ago
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    Try multiplying 5x10^5 and 2x10^8 :)

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