ten red cards and ten black cards are placed in a bag . you chose one card then another without replacing the first card. what is the probility that the first card will be red and the second card will be black

If a • b*2 = 1.8 x 10*-7, and c•b/d = 7.2 x 10*-4, find the value of a•d*2/c*2

What is the best reason for jacinta to have a savings account in addition to a checking account

Aswimming pool is a rectangle with semicircles on the end. the rectangle is 12 meters wide and 30 meters long. the diameter and width of the swimming pool are equal. sketch and label an overhead diagram of the swimming pool. find the area of the swimming pool floor.