There are five chemistry instructors and six physics instructors at a college. if a committee of four instructors is selected, find the probability of at least one of them being a physics instructor.

Complete the statements about the system of linear equation respresented by the tables the equation respented the left table is

Clara schumann is buying bagels for her coworkers, she buys a dozen bagels priced at $5.49 a dozen. the bakery's cost for making the bagels is $2.25 per dozen. what is the markup rate based on selling price on a dozen bagels?

I’m on question 7 it says a covered water tank is in the shape of a cylinder the tank has a 28 inch diameter and a height of 66 inches to the nearest square inch what is the surface area of the water tank