Question 1185334
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.