If the order of a matrix A is 2×3 and order of AB is 2×4 then, find the order of matrix B.

In a class, there are 12 girls. if the ratio of boys to girls is 5: 4 how many boys are there in the class

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?

With alll of except for the 2 that i did already