A machine having a velocity ratio of 4 meet 2,000J of energy to lift a load of 400N through a perpendicular distance of 2.5m. calculate the efficiency of the machine​

Acompany is testing in comparing to lightbulb designs the box plot shows the number of hours that each lightbulb design last before burning out which statement is best supported by the information of the plot

Is a positive integer raised to a negative power always positive

Astore has clearance items that have been marked down by 60%. they are having a sale, advertising an additional 55% off clearance items. what percent of the original price do you end up paying?