What is the general form for a number written in scientific notation? what are its practical applications?

Nick has box brads. he uses 4 brads for the first project. nick let’s b represent the original number of brads and finds that for the second project, the number of brads he uses is 8 more than half the difference of b and 4. write an expression to represent the number of brads he uses for the second project.

The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?

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