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April 21, 2014

April 21, 2014

Posted by **peyton** on Friday, March 25, 2011 at 7:44pm.

Write a simplified expression for the number of metres of fencing needed to enclose this space. Would this be correct

5 (x+11) + (2x-4) +(3x)

Determine the amount of fencing Mr. Smart will need to enclose the space if x= 7m?

Would this be correct

5(x+11) + (2x-4) + (3x)

5x +55 +10x -20 +15x

(5x+10X+15x) + (55-20)

= 30x + 35

Do these answers seem right! Please help!! Thanks

- grade nine math Polynomials -
**Reiny**, Friday, March 25, 2011 at 7:56pmI am confused by your solution.

In the opening part you state that the enclosure is 5 sided, but then you give only 3 dimensions.

in your expression you have 5 of the x+11, then you are adding the other two.

That would make it 7-sided, wouln't it?

Is there something missing in the first part?

- grade nine math Polynomials -
**peyton**, Friday, March 25, 2011 at 8:00pmSorry I should of stated that the 5 sided enclosure only gave 3 dimensions that's why I multiplied by 5. This is why I was unsure.

- grade nine math Polynomials -
**Reiny**, Friday, March 25, 2011 at 8:20pmIn that case neither the question nor your solution make any sense.

According to your algebraic expression, you have 7 sides.

- grade nine math Polynomials -
**peyton**, Friday, March 25, 2011 at 8:23pmit was a 5 sided pentagon but the problem only gave me 3 dimensions.

- grade nine math Polynomials -
**Reiny**, Friday, March 25, 2011 at 8:27pmAs i said, the problem makes no sense, and cannot be solved as it stands.

- grade nine math Polynomials -
**peyton**, Friday, March 25, 2011 at 8:32pmalright? so do you think i should question my own teacher?

- grade nine math Polynomials -
**Ms. Sue**, Friday, March 25, 2011 at 8:47pmOf course! How else do you learn but by asking questions?

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