posted by math student 7 on .
A gardener wants to fence the largest possible rectangular area using 200 yards of fencing. Find the best length and width of the garden.
please help me!
The largest area is a square.
P = 4S
200/4 = S
even if it said rectangular?
so its's 50 yd by 50 yd?
I also need help on this question:
Sandra walked to the top of a hill at a speed of 2km/h, turned around and walked down the hill at a rate of 4km/h. The whole trip took 6 hoours. How many kilometers is it to the top of the hill?
I thought it might be 6km but my math teacher checked it and said it wasn't.
A square is a rectangle. Yes. The largest area would be a square measuring 50 yards on each side.
Her average speed is 3 km/hour.
(3 * 6)/2 = ?
200=2(W+L) Divide with 2
Function has minimum or maximum when first derivate=0
100=2L Divide with 2
If second derivate<0 then function has a maximum.
If second derivate>0 then function has a minimum.
function has a maximum for L=50 yd
what do you do with (*)
* is sign for multiply