A tree standing vertically on level ground casts a 122 foot long shadow. The angle of elevation from the end of the shadow to the top of the tree is 20.4°. Find the height of the tree to the nearest tenth of foot.

Can you simplify 4/7? 24 points will be awarded!

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.