# Math Help - Need some help please

1. ## Need some help please

The minimum value of z=4x+10y subject to
3x+y<=to24
6x+4y<=to66
x>=to0,y>=to 0. is.

My answer after looking at a list of possible answers is 32, is this right.
a.165
b.110
c.44
d.32
Thanks for any help given.

2. Yep, that's what I got.

3. Hello, kwtolley!

Am I reading it wrong?
Are there typos in the problem?

The minimum value of $z \:=\:4x+10y$ subject to: $\begin{Bmatrix}3x+y\,\leq\,24 \\ 6x+4y\,\leq\,66 \\ x \geq 0\\ y \geq 0\end{Bmatrix}$ is:

$a)\;165\qquad b)\;110\qquad c)\;44\qquad d)\;32$

Doesn't $x = 0,\;y = 0$ satisfy the inequalties?

4. By Jove, Soroban, I think you're right. Here's the graph.

5. Soroban, I just ran this through the Linear Programming solver in Maple and it gave me (0,0) as the minimum. I looked right past the origin.

Looks like the list of answers is omitting the correct minimum. That's why you're the man and I'm just a dogface .

Good 'ketch' .

6. ## Thanks to you both

Thats what I thought it would be, 32. Thanks so much for checking my answer.

7. galactus are you using the program I use? If you are, how you like it?

8. I like it a lot. What's even better, it's free. It's that Padowan thing; I downloaded it. I sometimes have trouble getting it to shade what I want to shade, but other than that it's great. Is this what you have?.

9. Originally Posted by galactus
Is this what you have?.
Same one you have. Great thing it is free. Also safe, cuz many free programs are adware. Finally, do you know it can approximate a set a points with different curves?

10. Originally Posted by kwtolley
The minimum value of z=4x+10y subject to
3x+y<=to24
6x+4y<=to66
x>=to0,y>=to 0. is.

My answer after looking at a list of possible answers is 32, is this right.
a.165
b.110
c.44
d.32
Thanks for any help given.
As Soroban noted, the minimum value is 0, not on the list. So there is a typo. From this linear programming solver, which you can use to both solve the problem or check your work, the maximum value is 165, answer a.

If you have linear programming problems to solve in the future, you may want to bookmark that solver.

11. Originally Posted by ThePerfectHacker
Same one you have. Great thing it is free. Also safe, cuz many free programs are adware. Finally, do you know it can approximate a set a points with different curves?
No, I haven't delved into that feature. It's very user friendly.