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Could someone explain this to me? http://community.boredofstudies.org/showthread.php?p=1842480#post1842480 Thanks. :)

Being a non-biology student, I feel like I'm missing an arm and a leg. :( Quoted from CC: Because a person has two types of DNA - one from each parent - each primer pair will have grown two DNA fragments - one from each original type of DNA. These fragments may be the same or different...

On the average, a typist has to correct one word in 800 words. Assuming that a page contains 200 words, find the probability of more than one correction per page. Answer: 0.0625. Thank you. :)

James would like to know that if he jigs all the classes he has before the official hand in date for Ext 2 (tomorrow), will the school be able to report him and so on? I thought this kind of thing only applied to internal assessments. Does the final hand in date even count as an assessment...

Yah, the green/blue book. :) My one's so old that the back cover has been torn off, along with the answer section of chapter 29 and onwards. Does anyone have an intact version of this textbook? More importantly, is anyone kind enough to post the answers to exercise 29(a)?

Hallo. :) Hier koennen wir in Deutsch chatten.

For the past two years or so, it has always been my german teacher who interviewed us for speaking practice. She's really nice, and always speaks slowly so we could understand every single word. I'm a little worried about Saturday because we haven't had much practice with anyone else. So, if...

1. How many numbers greater than 4000 can be formed with the figures 3, 5, 7, 8, 9? (Repetition not allowed) 2. In how many ways can 5 boys and 3 women be arranged in a row? Thanks guys. ;)

People! I Have A Question! (About Chemistry) Which of the following equations correctly represents the products when NaOH reacts with H2SO4? a) H2SO4(aq) + NaOH(aq) → NaHSO4(aq) + H2O(l) b) H2SO4(aq) + 2NaOH(aq) → Na2SO4(aq) + 2H2O(l) If you chose b), could you please tell me how sodium...

A is a fixed point on a circle centre O, radius 1 cm. P is a variable point which moves around the circle with a constant speed of one revolution per second. ∟AOP = θ (i) Show that dθ/dt = 2π radians per second. (ii)Find the rate at which the area of ΔAOP is changing when θ =...

I always get screwed over by difficult induction questions. Does anyone have challenging induction questions, or rather, any induction questions at all that they would kindly scan/type up for me? :) Anything would be greatly appreciated. If not, come bitch about induction with me.

Okay chemistry people, listen up. :) For the syllabus dot point: Assess the evidence which indicates increases in atmospheric concentrations of oxides of sulphur and nitrogen, well, what are is evidence? What I wrote for this was: After the Industrial Revolutions in the 1800s, there was...

A sum of $30 000 was invested in a bank account at a fixed rate of interest, compounded annually. At the end of seven years, after the seventh interest payment has been made, the sum of money has grown to $50 000. What was the rate of interest, to the nearest one tenth of a percent? Please...

Is there no more custom status? Is it because people kept setting it to "Banned"? Am I stuck as Coconuthead? :(

... is my weakness. :( i) A box of 12 golf balls contains 8 white and 4 yellow balls. A boy selects 2 golf balls at random. What is the probability they are different colours? My answer was 16/33 ii) Another box of 12 golf balls contain 6 white, 4 yellow and 2 pink balls. A boy selects...

I'm reading through some notes on the CMM of water. It says: Most of the water from Sydney's dams travel through pipes to the Prospect Water Filtration Plant, which treats 3000 mL of water per day... 3000 mL? :p 3 Litres per day? That's pretty pathetic. :p Hence, I assume that the notes...

Here are some questions chem people can use for revision. :)

loga(1) = 0, a > 1 True or false? :)

In the diagram above, P(2ap, ap2) is a point on the parabola x2 = 4ay. The point Q lies on PS produced such that Q divides PS externally in the ratio 3:2. i) Prove that Q has co-ordinates (-4ap, a(3-2p2)). ii) Show that as P varies, the locus of Q is another parabola. Find its equation and...

At 9 am, an ultralight aircraft flies directly over Daryl's head at 500 metres. It maintains a constant speed of 20ms-1 and a constant altitude. If x is the horizontal distance travelled by the plane and θ is the angle of elevation from Daryl to the plane, i) Show that dx/dθ = -500cosec2θ...