Let u, v, w be vectors in 3− space. Prove the following
< u x v, (v x w) x (w x u) >= det(u, v, w) ^2

2men and 7 boys can do a piece of working 4 days.it is done by 4 men and 4 boys in 3 days how long would it take for 1man or one boy to do it alone

Charlie is a car salesman he earns $800 plus a 9% commission on all of her sales for the week if charlie receive the payment for $1960 this week how much where is total sales

Which math sentence can be used to determine if the triangle is a right triangle?