How to solve (1-(9/x)) divided by (1-(81/x))

Find the value of the variable and the length of each secant segment

Which fraction below is equivalent to 10/12?

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?