Find the angle between the vectors. (First find an exact expression and then approximate to the nearest degree.) a = 6i − 7j + k, b = 9i − k

exact

approximate

°

Multiply. −2x(6x4−7x2+x−5) express the answer in standard form. enter your answer in the box.

Arestaurant gives out a scratch-off card to every customer. the probability that a customer will win a prize from a scratch-off card is 25%. design and conduct a simulation using random numbers to find the experimental probability that a customer will need more than 3 cards in order to win a prize. justify the model for your simulation, and conduct at least 10 trials.

If a line is defined by the equation y = 5x + 2, what is the slope?