A catering service offers 11 appetizers, 5 main courses, and 6 desserts. A customer is to select 8 appetizers, 4 main courses, and 3 desserts for a banquet. In how many ways can this be done?

Asystem of equations has 1 solution. if 4x-y=5 is one of the equations , which could be the other equation ?

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'

Sherrie is baking a pie for her family. she leaves the room and comes back to 35% of the pie having been eaten before she can put the topping on. how much 1 square inch strips of dough will she need for the top, now that a portion is missing? round your answer to the nearest while nimber.