eracode: 


F*** you, Mitsubishi. I don't like your cars anyway.

MadEngineer: I had this question from when I studied NZCE

surfisup1000:

Jaxson: This took me about 10 seconds.  How is this difficult?

That may sound knoby but I found that china (?) car parking sequence one WAY more difficult, and that was for 7 year olds...

87, not really a math question though.  More a psychological trick. 

6FIEND:

MadEngineer: I had this question from when I studied NZCE

That's a much more appropriate question to "test" students with IMHO :-)

(BTW, I have determined the answer, but I haven't found an "elegant" way to solve it)

shk292:

6FIEND:

MadEngineer: I had this question from when I studied NZCE

That's a much more appropriate question to "test" students with IMHO :-)

(BTW, I have determined the answer, but I haven't found an "elegant" way to solve it)

Surely that just goes to a quadratic equation which can be solved by the standard formula (answer =12)?

shk292:

6FIEND:

MadEngineer: I had this question from when I studied NZCE

That's a much more appropriate question to "test" students with IMHO :-)

(BTW, I have determined the answer, but I haven't found an "elegant" way to solve it)

Surely that just goes to a quadratic equation which can be solved by the standard formula (answer =12)?

Jaxson:

shk292:

6FIEND:

MadEngineer: I had this question from when I studied NZCE

That's a much more appropriate question to "test" students with IMHO :-)

(BTW, I have determined the answer, but I haven't found an "elegant" way to solve it)

Surely that just goes to a quadratic equation which can be solved by the standard formula (answer =12)?

I'd approach it as Total area 108 m^2 is created by the area of the square plus the area of the Triangle.

So:

Area of the Square is d times (12-d/2)

plus

Area of the triangle is (d times (12m - (12-d/2))) / 2

=

108     So multiply that lot out, make d the subject and therefore solve for d?

shk292:

Jaxson:

shk292:

6FIEND:

MadEngineer: I had this question from when I studied NZCE

That's a much more appropriate question to "test" students with IMHO :-)

(BTW, I have determined the answer, but I haven't found an "elegant" way to solve it)

Surely that just goes to a quadratic equation which can be solved by the standard formula (answer =12)?

I'd approach it as Total area 108 m^2 is created by the area of the square plus the area of the Triangle.

So:

Area of the Square is d times (12-d/2)

plus

Area of the triangle is (d times (12m - (12-d/2))) / 2

=

108     So multiply that lot out, make d the subject and therefore solve for d?

Yep, it comes out as d^2 -48d +432 = 0, and you can apply the standard quadratic formula from there

MadEngineer: It's not a square.
.