Find the actual sum.-5.075 + (-2.460)

A. 12.485
B. 2.615
C. 7.535
D. -7.535


Answer: D

Mathematics

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Find an equation for the hyperbola described. Graph the equation.Center at (0, 0); focus at (, 0); vertex at (8, 0)

A.  -  = 1

B.  -  = 1

C.  -  = 1

D.  -  = 1

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Solve.A rotating beacon is located a distance d from a long wall. The distance d is given by , where t is the time measured in seconds since the beacon started rotating. Solve the equation for t.

A. t = 2? tan 
B. t =  tan 
C. t = 2? arctan 
D. t =  arctan 

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Use the information given about the angle ?, 0 ? ? ? 2?, to find the exact value of the indicated trigonometric function.csc ? = - , tan ? > 0Find cos .

A.
B. - 
C.
D. - 

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Evaluate the following expression. ? cot2t (2 sec2t - 2) ?

A. 2 B. 0 C. 3 D. 4 E. 1

Mathematics