Enter the correct value so that each expression is a perfect-square trinomial.

x2 – 10x +

Standard deviation of 19,29,21,22,23

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.

The difference of two numbers is 40. find the numbers if 0.3 parts of one number is equal to 37.5% of the other one.