Eliminate the parameter, t, in the parametric equations, x = 2cost and y = 4sint. x2 + y2 = 4 x2 + y2 = 16 4x2 + y2 = 16 x2 + 2y2 = 16

This is the number of parts out of 100, the numerator of a fraction where the denominator is 100. submit

12. the amount of money in a bank account decreased by 21.5% over the last year. if the amount of money at the beginning of the year is represented by ‘n', write 3 equivalent expressions to represent the amount of money in the bank account after the decrease?

An automated water dispenser fills packets with one liter of water on average, with a standard deviation of 5 milliliter. the manual says that after a year of operation the dispenser should be tested to see if it needs recalibration. a year later a number of filled packets are set aside and measured separately. it is found that the average packet now contains about 0.995 liters. does the dispenser need calibration? explain your answer.