Solve the problem.From a boat on the river below a dam, the angle of elevation to the top of the dam is 
If the dam is 1,421 feet above the level of the river, how far is the boat from the base of the dam (to the nearest foot)?
A. 3,491 ft
B. 3,471 ft
C. 3,461 ft
D. 3,481 ft
Answer: A
Mathematics
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Find the rational fraction in lowest terms represented by the periodic decimal.0.
A. 
B. 
C. 
D. 
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Solve the equation.2x + 9 = 3(x + 1)
A. 6 B. -12 C. 12 D. -6
Mathematics
Use Gauss-Jordan elimination to find the solution. Write the solution as an ordered triple.x - y + z = 8x + y + z = 6x + y - z = -12
A. (2, -1, -9) B. (-2, -1, -9) C. (-2, -1, 9) D. (2, -1, 9)
Mathematics
Factor the sum or difference of two cubes.512x3 - 729
A. (8x - 9)(64x2 + 81) B. (8x + 9)(64x2 - 72x + 81) C. (512x - 9)(x2 + 72x + 81) D. (8x - 9)(64x2 + 72x + 81)
Mathematics