Determine if the graph should be modeled by either y = a sin bt + k or y = a cosbt + k , Then find a, b, and k.
Mathematics
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Verify that the values of the variables listed are solutions of the system of equations.
x = 6, y = 5
A. solution B. not a solution
Mathematics
A triangle with vertices at (x1, y1), (x2, y2), and (x3, y3) has area equal to the absolute value of D, where 
. Use this information to solve the problem.Use D to find the area of the triangle shown.
A. 31.25 B. 31.5 C. 30.0 D. 29.75
Mathematics
Multiply.5x2(7x2 + 2x + 1)
A. 35x4 + 10x3 + 5x2 B. 35x4 + 10x2 + 5 C. 35x4 + 10x + 5 D. 12x4 + 7x + 6
Mathematics
Express the vector x as a linear combination of the u's.u1 = 
, u2 = 
, x = 
A. x = 4u1 - 2u2 B. x = -4u1 - 2u2 C. x = 4u1 + 2u2 D. x = 2u1 + 4u2
Mathematics