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How to calculate the force which the atmosphere presses against something? Given that x2+ax+b=(x+2)2-3 work out the values of a and b? If a coin is lipped and one die is thrown ,what is the probability of getting a head or a four? Hello California! We are doing a project on the San Andreas fault. Please help us by answering: https://goo.gl/forms/UZI6QfGu3Ft2rxYK2? Bill draws 1 line to make a figure and it has no angles. what is the figure?