Which of the given expressions results in 0 when evaluated at x = 5? A. 5x(x − 7) B. (x + 7)(x − 2) C. (x + 5)(x − 8) D. (x − 8)
2 answers:
Answer:
Option D
Step-by-step explanation:
The expressions are given in factor form.
Whenever any one factor is 0, expression is 0
Since x=5 we have x-5 =0
So wherever x-5 is a factor, the expressions has to be 0
Out of 4 expressions given we have
Option D is only having x-5 as factor
Hence option D expression
when x=5
Other expressions cannot be exactly 0 since x-5 is not a factor for any other of them
So only option D is right.
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Answer:
Option C - 420
Step-by-step explanation:
Given : Objective function, P, with the given constraints
Constraints,
To find : What is the maximum value
Solution :
First we plot the graph through the given constrains.
As they all move towards the origin the common region of the equations is given by the points (0,0), (0,12), (2,10), (4,0)
Refer the attached figure.
So, we put all the points in P to, get maximum value.
- Point (0,0)
- Point (0,12)
- Point (2,10)
- Point (4,0)
Therefore, The value is maximum 420 at (0,12)
So, Option C is correct.
