Cooper drove his car for 2 1/2 hours at a constant speed of 60 miles per hour and then for another 30 minutes at a constant spee
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<h2>Explanation:</h2><h2></h2>
Because we perform something like common factor, so this guarantee that corresponding digits have regarding coefficients have the same place value. Remember that a number written in scientific notation is given by the product of a number between 1 and 10 and another number that is power of 10. For example, let's write two examples about this:
Addition:
Addition:
Subtraction: