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anonymous
 one year ago
The distance from the sun to the Andromeda galaxy is 1.2×10^19 miles. Light travels at a speed of 5.88×10^12 miles per year (called light year) . How long does it take light to travel from the sun to the Andromeda galaxy ?
anonymous
 one year ago
The distance from the sun to the Andromeda galaxy is 1.2×10^19 miles. Light travels at a speed of 5.88×10^12 miles per year (called light year) . How long does it take light to travel from the sun to the Andromeda galaxy ?

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welshfella
 one year ago
Best ResponseYou've already chosen the best response.0you need to divide 1.2 * 10^19 by 5.88 * 10^12

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@Welshfella isn't the 5.88 supposed to go first ?

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0No do this in 2 parts 1/2 / 5.88 = ? 10^19 / 10^12 = ? can you figure these out?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0When I did 1.2 ÷ 5.88 I got 40 but on the calculator it says 0.20408163

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0yes thats correct but i think we can call that 0.204

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0now what do you get for 10^19 / 10^12  recall the law of exponents  when dividing you subtract the exponents

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0like x^4 / x^2 = x^(42) = x^2

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Yeah so my final answer is 0.204×10^7?

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0No i'm afraid not I expect they want the answer in scientific form where the first number must be betwen 1 and 10

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0so , to retain the correct value m you multiply the 0.204 by 10 and divide the 10^7 by 10

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Ahh I'm a little confused here

welshfella
 one year ago
Best ResponseYou've already chosen the best response.00.204 * 10 = ? 10^7 / 10^1 = ?

welshfella
 one year ago
Best ResponseYou've already chosen the best response.00.204 * 10^7 is correct but they want it in scientific form

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Kk I got it but since it's a word problem my answer would be "it takes 0.204 miles for light to travel from the sun to Andromeda " m?

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0in scientific notation that is 2.04 * 10^6 years

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0It doesn't say to write it in scientific notation

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0yes OK But you should be clear what scientific notation is.

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0Notice that the numbers in the question are all in scientific notation  1.2 and 5.88 are both in the rang 1  10.
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