Which relationships hold true for the sum of the magnitudes of vectors u and v, which are perpendicular? a. ||u+v||=||u||+||v|| b. ||u+v||=sq rt (||u||^2+||v||^2) c. ||u+v||

two train start from the same station at 11pm in opposite directions at speeds of 72km/h and 63km/h respectively at what time they will stop

If you flip two coins 200 times, how many times would you expect the coins to match?

The measure of one of the acute angles is a right triangle is given. What is the measure of the other acute angle? 20.8°

A box of chalk contains 10 pieces. how many pieces of chalk are in 40 boxes

Tramain made the table below for the system of equations y=2x+1 and y=-3x+11

A diagonal of a rhombus that is on the coordinate plane can be modeled by the equation y=6. determine which of the following could model the other diagonal. justify your answer. a. y=12 b. x=-6 c. y=4+x d. x=6-y

What is an expression equal to 5 (4x-3

At a sale this week, a sofa is being sold for $231. this is a 34% discount from the original price. what is the original price?

Katrina saved $300 last summer. Of that amount, 12% how much Came from her allowance

Using the quadratic formula to solve 4x^2-3x + 9=2x + 1 what are the values of x