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Can any one solve this problem? Hi, my question is simple. What is the answer to this: 0.250/0.25+7.5*3.2=? I ask this because apparently I forgot how PEMDAS work. Thanks.? I need a capacitor that will provide an output of 5 watts for 5 seconds before losing its charge.How do I figure out the capacitance I need? Thanks Sam, but I had already thought of that but I don't know how to do it! (I have a new computer - which I hate!)? Find the range of values of k such that 2x^2+4kx-k is always positive for all real values of x. [4]?