Jamal watched his older brother robert lift weights. the bar alone had a mass of 20 kg. on the bar he had two 11.4 weights, two 4.5 kg weights, and four 450 g weights. what mass was robert lifting?

Click on the graphic until you find the right quotient. (36xa - 30xb) ÷ (-6x2)

Agreeting card company can produce a box of cards for $7.50. if the initial investment by the company was $50,000, how many boxes of cards must be produced before the average cost per box falls to $10.50?

An optical inspection system is used to distinguish among different part types. the probability of a correct classification of any part is 0.92. suppose that three parts are inspected and that the classifications are independent. let the random variable x denote the number of parts that are correctly classified. determine the probability mass function of x. round your answers to four decimal places (e.g. 98.7654). x f(x) 0 1 2 3