Search results

Um i dont really understand what happened in my chem practical cause the teacher said if u add phenol indicator to magnesium carbonate dissolved in water, it will look different to phenol indicator added to magnesium oxide in water. So what will the colour of the solutions be? Cause when I did...

I think this might be the correct area to post it. I am currently do chem and for one of our prac we need to write a risk assesment on different substances. I looked at the website(epubintra) they gave us to use but it no longer exists. I was wondering does anyone know any websites which I could...

Hey all, I am currently doing Chem at school and part of one of our prac is to write up a risk assesment. I tried used epubintra website but it doesn't exists anymore. So i was wondering does anyone know a website that I can use to look up hazards of elements. I need to look up the following...

Just wondering what does the graphy l y l = x - 1 look like? thanks

Hey, how can I factorise fully x^4 + 1

Hey I have trouble solving this question. Can anyone help please? Thanks l 4x - 1 l > 2 x rt[x(1-x)]

Hey all, I just encountered a surd question which I have problem rationalising. It is 1/ (rt2 + rt3 + rt5) Can someone help me please. Thanks

Hey can someone help me i am sorta confused about this. Well not really maybe I just dont remember. For example what wind direction is this. o___________/ Is it an east direction or west direction?

hey i was wondering is it possible for me to report to the boardofstudies in regards to an exam supervisor carrying out inappropriate actions? How about i explain why and you guys make the decision? Today I did my science exam and was asking how do I write $10 in for one of my answer. He...

hey i was going through the fitzpatrick textbook and didnt know how to do one of its question. Can someone please help me? The question is: Prove (sin2A + 1)/cos2A = (cosA + sinA)/(cosA - sinA) thanks

Do you love eating mushrooms? I do :D What do you guys do with the mushrooms you buy? I normally use it to cook noodles or make omelettes or even use it as a side dish when eating bbq :D

sorry i have another trig problem. This time somewhat different Triangle ABC and Triangle BCD are similar triangles and are both isosceles. Angle ABC = Angle ACB = 72 degrees. AB = AC = 1. BD bisects Angle ABC BC = x. 1)Find the exact value of x 2) Hence, find exact value of cos 36

i posted this question in the wrong section so I am reposting it. Can someone help me with this question. Prove cos 2@ = 1- tan^2 @/ 1 + tan^2 @ hence show that tan67*30' = 1 + root2 thanks for the help

hey all i just encountered another trig problem. Can someone help me? Questions are. 1.If sin a = 3/5, 0* < a < 90* and sin b = 5/13, 90* < b < 180*, find exact values of i) sin 2a ii) cos (a-b) 2. Simplify sinAcosAcos2A. My first instinct for this problem is 1/2 sin2Acos2A. Is that...

hey all i was wondering what is ur favourite topic? Mine is trigonometry :D

I heard that apparently, a teacher from your school cannot tutor you. Is it true or is it false?

hey i know this is a long time ago but do you guys think that baseball and softball should be removed from the olympics? In my opinion I do not think so as one reason they suggested is too one sided. If baseball is one sided which it isnt, isnt badminton and table tennis pretty one sided as...

hello all, i just came across a maths question which i have problems doing. Question says, Evaluate cos^2 1 + cos^2 2 + cos^2 3 + ... + cos^2 87 + cos^2 88 + cos^2 89. My first instinct is to treat it like an arithmetic series. So i used formula of n[(a1 + an)/2] = 89(cos^2 1 + cos^2...

hello all, i am not sure if this function is odd or even. Can you explain why it is which? x/(x^2 - 1)

For the past two weeks, I've been listening to people at my tutoring place who talk about crap in regards to my school. They know barely anything and they go on talking about rumours. For e.g. one of them said, "Fort Street co-ed so what? There is only like 10% of students being female"...