John has two open packs of paper. one pack has 31 pieces of paper. the second pack has 45 pieces of paper. how many pieces of paper does john have all together? a) 72 b) 73 c) 74 d) 76

Successful implementation of a new system is based on three independent modules. module 1 works properly with probability 0.96. for modules 2 and 3, these probabilities equal 0.95 and 0.90. compute the probability that at least one of these three modules fails to work properly.

One of the same side angles of two parallel lines is 20° smaller than the other one. find the measures of these two angles.

Which questions would most a reader identify the author's purpose for writing? check all that apply. what type of text is this? what type of reviews did the book receive? how many copies of the book have been sold? what is the central idea? how does this text make one feel?