If 64 feet of rope weighs 20 pounds how much will 80 feet of the same rope weigh

Planning for the possibility that your home might get struck by lighting and catch on fire is part of a plan for ?

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.

The total number of dental clinics total for the last 12 months was recorded