A bag contains 4 black checkers and 8 red checkers. A checker is selected, kept out of the bag, and then another checker is selected. What is p(black, then red)?

Ammonia molecules have three hydrogen atoms and one nitrogen atom.how many of each atom arein five molecules of ammonia

25) 56(1) = 5b a. identity property of addition b. identity property of multiplication c. commutative property of multiplication d. commutative property of addition

What is the area of a triangle with vertices at (-3 3) (-3,2) and (1,2)?