Which polygons have fewer than two lines of symmetry?

Evaluate 4 a for a = 5 2/3 . express your answer in simplest form.

Which statement best describes the polynomial

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.