Select the proper rearrangement and placement for parentheses to speed up the addition for the expression 2 + 9 + 8 + 1 a. (9 + 2) + (8 + 1) b. (8 + 2) + (9 + 1) c. (1 + 2) + (9 + 8) d. (8 + 9) + (2 + 1)

How many zeros does the function f(x)=4x3-x2+1 have

What is the measure of the smallest angle in the diagram? 15 29 32 45

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.