In a batch of 280 water purifiers,12 were found to be defective. what is the probability that a water purifier chosen at random will be defective.

What scale factor was applied to the first rectangle to get the resulting image interior answer as a decimal in the box

Jessica is a custodian at oracle arena.she waxes 20 m2 of the floor in 3/5 of an hour. jessica waxes the floor at a constant rate.at this rate how many sqaures meters can she wax per hour

What is the lcm of 16 and 40 ? 24 and 40 ?