Book Maths Puzzle Time Distance and Speed

A cruise ship can sail @28 mph in calm water. Sailing with the gulf current the ship can sail 170 miles in the same amount of time that it can sail 110 miles against the gulf curre

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Book Other Question

Solve the inequality, state the solution set using interval notation

1/2x^2 is greater than/or equal to 4-x Quadratic_Equations/1699: Using the quadratic formula for x in the equation 2x^2 = 11x - 9 results in which of the following values:
A. -9/2 or 1
B. 9/2 or -1
C. 9/2 or 1
D. -9/2 or -1
Thanks for any help you can give me on this question!!
1 solutions

Answer 553 by smartdude17(3) on 2005-05-07 13:43:30:

When you do all the work, it comes to the answer C. 9/2 and 1. That means you got it right!!!!!!!!!!

Can someone show me how you derive the answer to this question. I need to know how to figure this out as well. (Guess I should have said that...lol)