Solve the equation by completing the square.6x2 + 2x - 4 = 0

A. , -1
B. , -1
C. , 1
D. , 1

Answer: B

Mathematics

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Find the derivative of the function.y = (7x + 8)3 + -1

A. (7x + 8)2 - -2
B. (7x)2 - -2
C. (7x + 8)2 - -2
D. (7x + 8)2 + -2

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Mathematics

Find T, N, and B for the given space curve.r(t) = (ln (cos t) + 8)i  + 7j + (5 + t )k, -?/2 < t < ?/2

A. T = (-sin t)i  + (cos t)k; N = (-cos t)i  - (sin t)k; B = j B. T = (sin t)i  + (cos t)k; N = (cos t)i  - (sin t)k; B = -j C. T = (-sin t)i  + (cos t)k; N = (-cos t)i  - (sin t)k; B = -j D. T = (sin t)i  + (cos t)k; N = (cos t)i  - (sin t)k; B = j

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Mathematics

Solve and check the linear equation.-4[3x + 7 + 3(x + 1)] = -7x - 5

A.
B.  
C.  
D.  

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Mathematics

Tell whether the statement is true or false.Let A = {8, 9, 10, 11, 12, 13}, B = {10, 12, 14}, C = {8, 9, 11, 13}, D = {9, 13}, and U ? C

A. True B. False

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Mathematics