Use the quadratic formula to solve the quadratic equation.2x2 = 7x + 9
A. x = 
, 1
B. x = 
, -1
C. x = 
, -1
D. x = 
, 0
Answer: C
Mathematics
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Suppose u and v are differentiable functions of x. Use the given values of the functions and their derivatives to find the value of the indicated derivative.u(1) = 5, u '(1) = -6, v(1) = 6, v '(1) = -3.
(3v - u) at x = 1
A. 23 B. 13 C. -15 D. -3
Mathematics
Find the rectangular coordinates for the point for which the polar coordinates are given.(3.3, 4.1)
A. (-1.90, 2.70) B. (-2.70, -1.90) C. (-1.90, -2.70) D. (2.70, -1.90)
Mathematics
Tell whether the points are the vertices of a parallelogram (that is not a rectangle), a rectangle, or neither.(-10, -4), (-1, -18), (13, -9), (4, 5)
A. Parallelogram B. Neither C. Rectangle
Mathematics
Graph the function.y = -2 + cot x
A. 
B. 
C. 
D. 
Mathematics