Solve the problem.The numerator of a fraction is 8 times the denominator. If 9 is subtracted from the numerator, and added to the denominator, the resulting fraction is equal to . Find the original fraction.

A.
B.
C.
D.


Answer: C

Mathematics

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Find the vertices of the hyperbola.y2 - x2 - 6x = 10

A. (-3, -2) and (-3, 2) B. (-3, -1) and (-3, 1) C. (3, -1) and (3, 1) D. (3, -2) and (3, 2)

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Right triangle ABC has , , and

style="vertical-align: middle;" data-wiris-created="true" varid="variable_id_field" variablename="impvar_14455ebf5b3b4469b28aa8009" />. Use this information to find cos A.
?

A.
B. ?
C. ?
D. ?
E. ?

Mathematics