What must be true in order for p (a or b) = p(a) + (b)
a and b cannot be disjoint
a and b must be independent
a and b cannot be independent
a and b must be disjoint
it is always true

Alana has 12.5 cups of flour with which she is baking four loaves of raisin bread and one large pretzel. the pretzel requires 2.5 cups of flour to make. how much flour is in each loaf of raisin bread? explain the steps to follow to get the answer.

The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a mean of $235 and a standard deviation of $20. according to the standard deviation rule, how much did almost all (99.7%) of the students spend on textbooks in a semester?

If the discriminant if a quadratic equation is 4 which statement describes the roots?