Find the limit, if it exists. 
Does not exist
Mathematics
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Prove the identity.
?
What will be an ideal response?
Mathematics
Solve the system of equations using substitution.
A. x = 5, y = 4; x = 4, y = 5 or (5, 4), (4, 5) B. x = 10, y = 2; x = 2, y =10 or (10, 2), (2, 10) C. x = 6, y = 3; x = 3, y = 6 or (6, 3), (3, 6) D. x = 20, y = 1; x = 1, y = 20 or (20, 1), (1, 20)
Mathematics
Convert the given quantity to the desired unit. Round to the nearest tenth if necessary.84 km to mi
A. 135.5 mi or 135.2 mi B. 275.5 mi C. 52.1 mi or 52.2 mi D. 25.6 mi
Mathematics
Use a graphing calculator to approximate the vertex of the graph of the parabola defined by the following equation.y = -5x2 - 4x + 6
A. (2, 6.8) B. (-0.4, 6.8) C. (0.4, 6.8) D. (-0.4, 5.2)
Mathematics