Nineteen cards numbered from 1 through 19 are placed into a box and two cards are selected without replacement.
find the probability that both numbers selected are odd, given that their sum is even.
find the probability that both numbers selected are odd, given that their sum is even.

Evaluate the expression for the given value of the variable 7a - 4a for a =8

Amath club has 40 members. the number of girls y is 6 less than the number of boys. how many members are boys x? how many members are girls y?

The weight of a small starbucks coffee is a normally distributed random variable with a mean of 340 grams and a standard deviation of 11 grams. find the weight that corresponds to each event. (use excel or appendix c to calculate the z-value. round your final answers to 2 decimal places.)highest 30 percent middle 70 percent highest 90 percent lowest 20 percent