Perform the addition.4.7 + 8.29
A. 13.09
B. 3.59
C. 12.99
D. -3.59
Answer: C
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Evaluate the integral.
A. 72 B. 432 C. 54 D. 324
Determine whether the sequence converges or diverges, and, if it converges, find 
an.an = 
n
A. e9 B. 0 C. 9 D. Diverges
Use scientific notation to solve the problem.If you could generate energy by fusing the hydrogen in ordinary tap water, how much water would you need to meet the energy needs of the United States for 56 years? Assume that the energy released by fusion of hydrogen in one liter of water is 7 × 1013 joules and that the U.S. annual energy consumption is 1 × 1020 joules. Give your answer in scientific notation.
A. 1.4 × 107 liters B. 8 × 101.5 liters C. 8 × 107 liters D. 8 × 10-7 liters
Solve the problem.A 15-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 stretch the spring and lower the mass 1.5 m? Round to four decimal places when appropriate.
A. 248.0625 J B. 303.1875 J C. 523.6875 J D. 27.5625 J