Suppose a prp—1, where p is orthogonal and r is upper triangular. show that if a is symmetric, then r is symmetric and hence is actually a diagonal matrix.

We have 339 ounces of jam to be divided up equally for 12 people how muny ounces will each person get

Abilliard ball is struck by a cue. it travels 1 0 0 cm 100cm before ricocheting off a rail and traveling another 1 2 0 cm 120cm into a corner pocket. the angle between the path as the ball approaches the rail and the path after it strikes the rail is 4 5 ∘ 45 ∘ . how far is the corner pocket from where the cue initially struck the ball? do not round during your calculations. round your final answer to the nearest centimeter.

What is the approximate value of the correlation coefficient for the given graph? a. 1 b. 5 c. 3 d. -1