One card is randomly selected from a standard 52 card deck. what is the probability that the card is a black ace

What number produces an irrational number when multiplied by -1.25

Select true or false to tell whether the following conditional p q is true or false. use the truth table if needed. if a week has seven days, then a year has twenty months.

The parabola x = y² - 9 opens: a.)up b.)down c.) right d.)left