-9 is a rational number. Rational numbers are numbers that can’t be written as a simple fraction like pi (3.14...etc)
<u>Answer:</u>

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<u>Step-by-step explanation:</u></h3>
According to Question , a plane travels 120 miles in 2 hours. So here we will use unitary method .

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<u>Hence</u><u> </u><u>it </u><u>will</u><u> </u><u>cover</u><u> </u><u>30</u><u>0</u><u> </u><u>miles</u><u> </u><u>in</u><u> </u><u>5</u><u> </u><u>hours</u><u> </u><u>.</u></h3>
Here it was a case of direct proportion in which if two things are directly proportional to each other. If one thing thing increases then the value of second also increases. Here if the time increases then the distance also increases
0.5477225575 ... u have to change this in scientific notation