11 runners took at least 30 minutes to finish the race. (:
A=4×-3 I think this is the equation
okey
you needed the sum or division?
The answer is:
(v-1)(v+1)(v^2+1)
Three reasons why the other method is not better is because to use drawing program would mean you would need some sort of technology and electricity to use it and some places, like third world countries, do not have access to that, so most probably you would have to resort to paper. Also, drawing programs are based off the skills needed to create geometric figures with a straightedge and compass. And lastly, what if we had no more technology anymore? Then how would we use a drawing program? Drawing programs are only reliable when electricity is located.
SO THE ANSWER IS A hope it help :)
