Answer:
1.) 2.5 meters a second
Step-by-step explanation:
1 min 12 seconds is 72 seconds. 28 meters on 72 seconds. 28×2.5=72
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52=x because x+128=180 and that is a 189 angle
913
<u> - 426 </u>
<u />487 would be your total but your question is how many times we would have to regroup, so.
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First, you would have to borrow from the 1 because 3 is smaller then 6. Second, you would have to borrow from the 9 because you can't take 2 from 0. So there you would have to regroup twice to work this problem.
Hope that helps you. :-)
