. In a group containing 5 males and 8 females, 2 people are chosen without replacement. Of all the pairs possible, what proportion will be a same-sex
couple?

Write a function for a rotation 90 degrees counter clockwise about the origin, point 0

1- is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis. 2- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis. 3- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in part b?

Joe has some money in his bank account he deposits 45$ write an expression that represents the amount of money in joe's account