Mathematics - 12 October 2007

2007-10-12 02:44:58 · 25 answers · asked by panktee p 1

There are 3 boxes. 1 has apples, 1 has oranges and the other has apples and oranges. The boxes are labeled wrong so that no label is correct. Sue opens just one box, and without looking in the box, takes out 1 piece of fruit. She looks at the fruit and immediately labels all the boxes correctly. Which box did she open and how did she know?

2007-10-12 02:25:51 · 14 answers · asked by DicK 2

I need to enter a castle that is surrounded by a 5 meter wide moat filled w/water. I have an aversion for getting wet and only have two 4.5 meter long planks with no rope, nails, etc. How do I get across?

2007-10-12 02:24:35 · 5 answers · asked by DicK 2

I am working through a packet as I prepare for a test.

y= (2x^3-8x^2-x+4)/(x^2-6x+9)

I found one vertical asymptote at x=3 from the factors (x-3)^2

I found no horizontal asymptote - my rationale is the highest degree of the numerator is larger than the highest degree of the denominator. Where did I go wrong? My answers say there should be two asymptotes? Am I doing this wrong, overthinking, etc.?

2007-10-12 02:17:59 · 2 answers · asked by CHILL 1

CAn someone explain 'how we determine the maximum and minimum points using the second derivative of a function?
I wanna know how the whole thing works..like how the negative value of the 2nd derivative gives the maximum value.
Pleeaassee help me out with this!!

2007-10-12 01:31:42 · 3 answers · asked by meeta1704 2

?

Also

A roast weighs 7 3/4 lb. In roasting, it loses 1/10 �of its weight. How� many servings are in the roast if each serving is 7/32 lb.? Round your answer to a whole number.
29
31.5
29.75
32


A fluid ounce of water weighs 29.57 grams. A fluid ounce of certain oil weighs 65% of a fluid ounce of water. What is the weight of 1 quart of this oil? (Hint: One quart = 32 ounces)
1,022.35 grams
615.056 grams
977.044 grams
514.78 grams


thanks =]

2007-10-12 01:22:05 · 8 answers · asked by Meghan XD 1

2007-10-12 01:17:14 · 2 answers · asked by Phongthep P 1

1) v = u + at.

2) S = ut + 1/2 a t^2.

2007-10-12 00:26:30 · 5 answers · asked by Anonymous

Show that d/dx (sin 2x/ 1 + cos 2x) = k/ 1 + cos 2x, stating the value of the constant k.

Ans: k = 2


Show your workings with explanation..thanks

2007-10-12 00:21:02 · 1 answers · asked by Anonymous

Solve for x and express the roots in simplest a+bi form.

4 + (5/x^2) = (6/x)

2007-10-12 00:05:26 · 3 answers · asked by journey 1

2007-10-12 00:04:43 · 5 answers · asked by Anonymous

A curve has the equation y = (x + 2) √x - 1

(i) Show that dy/dx = kx / √x - 1, where k is a constant, and state the value of k.

Ans: 3/2


Show your workings clearly...I need to understand..thanks.

2007-10-12 00:04:42 · 2 answers · asked by Anonymous

2007-10-12 00:00:32 · 2 answers · asked by pobafett 2