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The output is 1 more than 10 times the input.
The answer depends on what the "number machine" does. For example, if it quadruples, the input should be 10; if it halves, the input should 80; if it adds 10, the input should be 30; and so on.
10
There are infinitely many possible rules. One simple rule, for input n isU(n) = (n^2 + 3n + 2)/2 = (n + 1)*(n + 2)/2or, equivalently, the sum of all the integers from 1 to n+1.
The mechanical advantage is 10.We use machines to make our work easier and faster.Mechanical advantage gives an idea of how much a mechanism makes our work easier.It is the factor by which the mechanism multiplies the force or torque applied.One way of calculating mechanical advantage is:Mechanical Advantage= (output force)/ (input force)So using this formula to answer the question above, the result is20/2 = 10