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Mathematics 9 Online
OpenStudy (anonymous):

For the feasibility region shown below (will attach in a sec!!), find the maximum value of the function P=2x+3y. *** there are no answer choices...

OpenStudy (anonymous):

OpenStudy (anonymous):

hi!!! i have like no idea how to do this :(

jimthompson5910 (jim_thompson5910):

this is a linear programming problem

jimthompson5910 (jim_thompson5910):

so first you need to identify the corner points

jimthompson5910 (jim_thompson5910):

what are the corner points

OpenStudy (anonymous):

(6,5)

jimthompson5910 (jim_thompson5910):

that's one, what else

OpenStudy (anonymous):

(0,8)

jimthompson5910 (jim_thompson5910):

good, any others?

OpenStudy (anonymous):

(8,0)

jimthompson5910 (jim_thompson5910):

and finally...???

OpenStudy (anonymous):

and (0,0)

jimthompson5910 (jim_thompson5910):

the min and the max will result if you plug in one of those points into P = 2x+3y

jimthompson5910 (jim_thompson5910):

so plug in each point into P = 2x+3y

OpenStudy (anonymous):

will it be the same outcome?? or must i do all of them??

OpenStudy (anonymous):

(6,5) P=2(6)+3(5) =12+15 =27 is that one right??

jimthompson5910 (jim_thompson5910):

good, and the last one is?

OpenStudy (anonymous):

(8,0) P=2(8)+3(0) =16+0 =16

jimthompson5910 (jim_thompson5910):

plug in (0,0) P = 2x+3y P = 2(0)+3(0) P = 0 + 0 P = 0 plug in (0,8) P = 2x+3y P = 2(0)+3(8) P = 0 + 24 P = 24

OpenStudy (anonymous):

what do i do now?? were those right? :D

jimthompson5910 (jim_thompson5910):

So we have the following (0,0) ---> P = 0 (0,8) ---> P = 24 (6,5) ---> P = 27 (8,0) ---> P = 16 which point yields the largest value of P?

OpenStudy (anonymous):

largest point is 27???

jimthompson5910 (jim_thompson5910):

so the max of P = 2x+3y is P = 27 given the restrictions in the graph

OpenStudy (anonymous):

oops i meant (6,5) ??? haha is (6,5) the largest point??

jimthompson5910 (jim_thompson5910):

that's the point that yields the maximum

jimthompson5910 (jim_thompson5910):

the actual max is P = 27

OpenStudy (anonymous):

so my answer is: P=27 ???

jimthompson5910 (jim_thompson5910):

yes

OpenStudy (anonymous):

okay!! thanks :D

jimthompson5910 (jim_thompson5910):

np

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