, 22.06.2019 19:50 dontcareanyonemo

# (1 point) a computer retail store has 9 personal computers in stock. a buyer wants to purchase 4 of them. unknown to either the retail store or the buyer, 4 of the computers in stock have defective hard drives. assume that the computers are selected at random. (a) in how many different ways can the 4 computers be chosen?(b) what is the probability that exactly one of the computers will be defective?(c) what is the probability that at least one of the computers selected is defective?

### Another question on Mathematics

Mathematics, 21.06.2019 14:30
Mathematics, 21.06.2019 16:00
Find the area and perimeter of each composite figure. use 3.14 for π. round your answer to the nearest tenth. a square and a right triangle share a common side. image long description a 3-meter by 0.5-meter rectangle has triangles attached like wings to the 3-meter sides. the other two sides of both triangles measure 2.5 meters. the height of each triangle is 2 meters. a 6-inch by 4-inch rectangle has 2 half-circles attached like wings to the 6-inch sides. the radius of each half-circle is 3 inches. find the surface area and volume of each figure. use 3.14 for π. round your answer to the nearest tenth. a right circular cylinder has a base radius of 6 yards and a height of 20 yards. a rectangular prism has a base that is 9 centimeters long and 7 centimeters wide. the height is 2 centimeters. a rectangular prism has a base that measures 11 millimeters by 11 millimeters. the height is 11 millimeters.