SOLUTION: An extrasolar planet is observed at a distance of 4.2×10^9 kilometers away. A group of scientists has designed a spaceship that can travel at the speed of 7×10^8 kilometers per y

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Question 1185334: An extrasolar planet is observed at a distance of 4.2×10^9 kilometers away. A group of scientists has designed a spaceship that can travel at the speed of 7×10^8 kilometers per year.
How many years will the spaceship take to reach the extrasolar planet?
Answer by Theo(13342) About Me  (Show Source):
You can put this solution on YOUR website!
the extrasolar planet is 4.2 * 10^9 kilometers away.

the spaceship can travel at a speed of 7 * 10^8 kilometers per year.

4.2 * 10^9 kilometers divided by 7 * 10^8 kilometers per year would be equal to 6 years.

the division is done as follows:

(4.2 * 10^9) / (7 * 10^8) = (4.2 / 7) * (10^9 / 10^8) which is equal to:

(4.2 / 7) * (10^(9-8)) which is equal to:

(4.2 / 7) * 10^1 which is equal to:

.6 * 10 which is equal to 6.

you can use your scientific calculator to confirm that this is true.

enter:

(4.2*10^9)/(7*10^8)

the calculator will tell you the answer is 6.