In a sale, there is 25% off all prices. a chair costs £100 before the sale. how much was it in the sale?

Isaac wants the equation below to have no solution when the missing number is placed in the box. which number should he place in the box?

How do newtons third law of motion demonstrates on a rollar coster

Aprobability experiment is conducted in which the sample space of the experiment is s={7,8,9,10,11,12,13,14,15,16,17,18}, event f={7,8,9,10,11,12}, and event g={11,12,13,14}. assume that each outcome is equally likely. list the outcomes in f or g. find p(f or g) by counting the number of outcomes in f or g. determine p(f or g) using the general addition rule.