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For one history test, keith had to answer 40 questions. of these 40 questions, keith answered 28 of them correctly. what percent did keith get on his history test? round your answer to the nearest tenth if necessary

When using the linear combination metho e linear combination method to solve a system of linear equations, the four options are:

What is the simplified form of (3.25x10^3)(7.8x10^6) written in scientific notation?