Find the equation of the least squares line.Two separate tests are designed to measure a student's ability to solve problems. Several students are randomly selected to take both tests and the results are shown below. 
A. y = 0.930 - 19.4x
B. y = -19.4 - 0.930x
C. y = 19.4 + 0.930x
D. y = -0.930 + 19.4x
Answer: C
Mathematics
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Find the value of the trigonometric function.cot 56.8°
A. 1.53 B. 0.654 C. 0.257 D. 0.837
Mathematics
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) = 4, u '(1) = -5, v(1) = 7, v '(1) = -3.
(3v - u) at x = 1
A. 17 B. -14 C. -4 D. 25
Mathematics
Solve the following systems of linear equations using Gaussian elimination.
5x + 2y = 8 6x + y = 13
Mathematics
Solve the polynomial inequality and graph the solution set on a number line.x2 - 4x + 4 < 0
A. (-?, 2)
B. (2, ?)
C. ?
D. (-?, ?)
Mathematics