Solve the problem.At the two points where the curve x2 + 2xy + y2 = 4 crosses the x-axis, the tangents to the curve are parallel. What is the common slope of these tangents?
A. 0
B. -2
C. -1
D. 1
Answer: C
Mathematics
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Write the decimal as a fraction in lowest terms.0.492
A. 
B. 
C. 
D. 
Mathematics
Find fx, fy, and fz.f(x, y, z) = z(ex)y
A. fx = zyexy; fy = zxexy; fz = zexy B. fx = zyexy; fy = zxexy; fz = exy C. fx = zexy; fy = zexy; fz = exy D. fx = zxexy; fy = zyexy; fz = exy
Mathematics
Factor by grouping.x3 - 5x2 + 6x - 30
A. (x2 + 6)(x + 5) B. (x3 + 6)(x + 5) C. (x2 - 6)(x - 5) D. (x2 + 6)(x - 5)
Mathematics
Use your calculator to evaluate the square root. Write your answer to seven decimal places.
A. 11.4455231 B. 17,161 C. 11.4891253 D. 11.3137085
Mathematics