Astudent simplifies (6b + 4r) – (2b + r) and says that the result is 4b + 5r. explain the error and describe the correct steps to simplify the expression.

Acircle has a circumference of 28.36 units what is the diameter of the circle

Atorch and a battery cost 2.50 altogether.the torch costs 1.50 more than the battery.what fraction of the total price is the torch? give your answer in its simplest form.

Match the vocabulary to the proper definition. in probability, two events in which 1. conditional probability the outcome of one event is independent of the outcome of a second event. 2. dependent events in probability, two events in which the outcome of one event is dependent on the outcome of a second event. the probability of an event in which the outcome of the event is conditional on the outcome of one or more different events. 3. independent events