Evaluate 2xy - 3x for x = - 2 and y = 7.

Is the orthocenter of a triangle on the inside ?

Abag contains 3 red marbles, 2 blue marbles, and 2 green marbles. one marble is picked, then another marble. assume that the selections are made with replacement. a) find the probability of picking two red marbles with replacement. b) find the probability of picking a red marble and a blue marble. assume the selections are made without replacement. c) find the probability of picking two red marbles without replacement. d) find the probability of picking a red marble and a blue marble without replacement.

Charlie tosses five coins.what is the probability that all five coins will land tails up.