Find an equation for the parabola described.Symmetric about the x-axis and passes through the point (1, 3)

A. y2 = x
B. x2 = 9y
C. y2 = 9x
D. x2 = y


Answer: C

Mathematics

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Solve the problem.A power boat in still water maintains a speed of 30 miles per hour. The boat heads directly across a river perpendicular to the current which has a speed of 8 miles per hour. Find the actual speed and direction of the boat.

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Show that the equation is not an identity by listing the value(s) of the variable from among 0, , and -  for which the equation is false.sin2? = cos2?

A.
B. - 
C. 0 and 
D.  and - 

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A.

B.

C.

D.

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