Answer:
-1/10
Step-by-step explanation:
(5/(-10))/5 = -(5/10)/5 = 1/10
(Hopefully this helped you out!)
You haven't shared "the given value of x," or, if you have, you haven't drawn attention to it.
Just suppose we were to choose x = 4 as a possible solution and then try to find a value of the parameter k that would make x = 4 an actual solution.
2(4) + 4k - 9 = (4)(4) - (4) + 1
Then 8 + 4k - 9 = 16 - 4 + 1, or 4k - 1 = 13. Then 4k = 14, and k = 14/4, or (after reduction) k = 7/2
If the parameter k equals 7/2, then x = 4 is a solution to the given equation.
To check this out further, start with the proposed solution x = 5 and find k.
47 + 2 = 49. That gets rid of the -2. 49 ÷ -7 = -6. x= -6.
Factor the numerator and denominator then simplify.
6x^2 - 54 6(x^2 - 9) 6(x + 3)(x - 3) 6(x - 3)
-------------- = ------------- = ------------------ = ------------
5x^2 + 15x 5x(x + 3) 5x(x + 3) 5x
6(x - 3)
----------
5x
If the change in the number of pounds is p, the change in the cost will be $11c.
This is because each pound costs $11.
