Question

A farmer wants to set aside a rectangular plot of land to contain 660 square meters. If the width is 7 less than the length, find the dimensions of the plot.

Answer 1

call the length x and so the width is x-7
to get the area of a rectangle it's length times width
so; area = 660 = x(x-7)
=> 0 = x^2 -7x -660
Then use the quadratic formula and use the positive value :) ... this should work

Answer 2

ok great! I was completing the square and it wasn't working out i'll try the quadratic formula instead

Answer 3

complete the square should work as well
(x-7/2)^2 -49/4-660 = 0
(x-7/2)^2 = 2689/4
(x-7/2) = +- 2sqrt(165)
x = 7/2 + 2sqrt(165)

Answer 4

should get the same answer using each method

Answer 5

thank you so much. i'll run the numbers again

Answer 6

got it! may i ask you one more question?

Answer 7

yh sure

Answer 8

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