What is the solution of x/3 - 5=4? Justify each step.

The hypotenuse of an isosceles right triangle is $14\sqrt 2$. what is the area of the triangle?

Determine the next term in the sequence. then write the next 2 terms 4,16,28, what number do you do to get that?

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.