Solve the problem.A 25-kg mass is attached to a spring that hangs vertically and is stretched 2 m from the equilibrium position of the spring. Assume a linear spring with F(x) = kx. How much work is required to compress the spring and lift the mass 1 m? Round to four decimal places when appropriate.

A. 183.75 J
B. 275.625 J
C. 30.625 J
D. 428.75 J

Answer: D

Mathematics

Solve the problem.How many of the polygons below have three or fewer lines of symmetry?

A. 6 B. 4 C. 5 D. 3

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Mathematics

Determine if the given solution is correct. If it is not, find the solution.Is -6 the solution to x + 6 = 7 - 7?

A. no; x = 6 B. no; x = 20 C. no; x = 8 D. yes

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Mathematics

Divide and simplify. ÷

A.
B. z + 2
C.
D.

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Mathematics

Convert the function to the specified base. f(x) = x; convert to base e

A. f(x) = e^{-3 ln x}
B. f(x) = e^{x ln 3}
C. f(x) = e^x
D. f(x) = e^{-x ln 3}

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Mathematics