Brian is training for a marathon. He is going to ramp up the number of miles he runs by 2 miles each week. In the first week, he
is going to only run 5 miles, then the second week 7 miles, the third week 9 miles, etcetera. If Brian keeps this routine up for 20 total weeks, what is the total distance he will have run? Show how you arrived at your answer
... a triangle are 2,-1,-3 4,2,3 and 6,3,4 respectively. If vector AB=2,3,6 vector AC=4,4,7 vector BC=2,1,1 , show that AB=7 AC=9 and BC= square root of 6.
