Question

a rectangle has an area of 96 sq ft if the width of the yard is 4 ft less than the length, what is the perimeter in ft of the yard:
that's my problem.. my question is what is the number that will help me figure this out or how do i get that number to find my answer

Answer 1

put say \(x\) as the length, then \(x-4\) is the width because it says
the width of the yard is 4 ft less than the length

Answer 2

the area is length times width, and so you have to solve
\[x(x-4)=94\]
can you do that?

Answer 3

oh ok yes i can

Answer 4

ok then once you find \(x\) you still have to find the perimeter, which will be
\[x+x+x-4+x-4\] better known as \[4x-8\] don't forget that step at the end

Answer 5

let me know what you get for \(x\)

Answer 6

ok

Answer 7

44 my final answer

Answer 8

hmmm i think i got 40
what did you get for \(x\) ?

Answer 9

dammit well it doesnt matter ur correct

Answer 10

i used 24

Answer 11

oh damn i made a mistake above, it is \(96\) not \(94\) you have to solve
\[x(x-4)=96\]

Answer 12

\[x(x-4)=96\]
\[x^2-4x=96\]
\[x^2-4x-96=0\]\[(x-12)(x+8)=0\]

Answer 13

then if \(x=12\) you have \(4\times 12-8=40\)