Solve the equation. If the solutions involve square roots, give both the exact solutions and the approximate solutions to three decimal places.2n2 = -8n - 5
A. 
? -0.775, 
? -3.225
B. 
? -0.388, 
? -1.612
C. 
? 0.550, 
? -4.550
D. 
? -2.775, 
? -5.225
Answer: A
Mathematics
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Write as a radical expression. Simplify if possible.(-125)2/3
A. 
2 = 25
B. (-125)2/3 is not a real number.
C. 
2 = -25
D. 
2 = -5
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Reverse the order of integration and then evaluate the integral.
A. 1 - cos 8 B. cos 8 C. 1 + cos 8 D. - cos 8
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Find the triple scalar product (u x v) ? w of the given vectors.u = 4i + 2j - k; v = 1i + 5j - 3k; w = 5i + 3j - 6k
A. -44 B. -52 C. -142 D. -80
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Graph the linear equation. Give the x- and y-intercepts.y = - 3
A. x-intercept: (- 3, 0); y-intercept: none
B. x-intercept: none; y-intercept: (0, 3)
C. x-intercept: none; y-intercept: (0, - 3)
D. x-intercept: (0, 0); y-intercept: (0, 0)
Mathematics