On a math test, 30 students earned a B. This number is exactly 40% of the total number of students in the class. How many students are in the class

Which is the graph of the piecewise function f(x)? f(x)=[tex]f(x) = \left \{ {{-x+1, x\leq 0 } \atop {x+1, x\ \textgreater \ 0}} \right.[/tex]

How do you create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1?

Someone answer asap for ! michele pushes a box d meters across a floor. she uses a force f, in newtons, to push the box. she pushes the box for t seconds. the formula p = fd/t calculates the power, p, in watts, that it takes for michele to complete the task. solve the formula for d.