Which value of vvv makes 12=12+\dfrac{v-8}{2}12=12+ 2 v−8 ​ 12, equals, 12, plus, start fraction, v, minus, 8, divided by, 2, end fraction a true statement?

Determine the relationship of ab and cd given the following points

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.

Ageologist had two rocks on a scale that weighed 4.6 kilograms together.rock a was 0.5 of the total weight.how much did rock a weigh?