A)why is the event of rolling less than a sum of 6 not the complement of rolling more than a sum of 6? b)if rolling a sum of 6 has a probability of 5/36, then what is the probability of rolling a sum less than 6?

​

Let hh represent the number of hummingbirds and ss represent the number of sunbirds that must pollinate the colony so it can survive until next year. 6h+4s > 746h+4s> 74 this year, 88 hummingbirds pollinated the colony. what is the least number of sunbirds that must pollinate the colony to ensure that it will survive until next year?

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

Which of the following graphs could represent a quartic function?