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Ohhhh yeaaaahhhh. Um okie thanks. Lol. Now I feel stupider.

Hiii. Okay can someone please help me with this question? Keeping in mind you're speaking to someone who is mathematically challenged. I have a worked answer for it but I don't understand it. Factorise fully: (m+2n)3 + (m-2n)3 The answer is: 2m(m2+12n2) The first line of working...

... which I can't do. 1) Find the maximum and minimum values of y = (x + 5)1/2 for -4 ≤ x ≤ 4. Answer: max: 3, min: 1 2) A surfboard is made in the shape of a rectangle and semicircle, as shown. The perimeter is to be 4 m. Find the maximum area of the surfboard, correct to 2 decimal...

Yep, 3 and -9 were the answers. :)

Yep definately after ten minutes. Answers are probably wrong then. Lol okay I did do something stupid for the second part - I forgot to change the time to seconds. Thank you both! :)

"A cross country runner runs at 3.2 ms^-1 for 5 minutes north, then runs at 4 ms^-1 for 10 minutes north. He then returns to the start at a steady pace, taking 20 minutes. Find: b) his diplacement after 10 minutes. e) his average speed for the whole journey." According to the answers: b) 3360...

Yeah our school's certainly not airconditioned. 'Cept in the computer labs but that's because the Apples are more important that the students. Yep. :)

Re: At least 14 dead in Victoria bushfires It's awful. The ones at Redesdale and Bendigo are maybe 15 km from where I grew up. I wouldn't be suprised if the death toll does rise to not far from Ash Wednesday.

:mad1: Hm. Okay thanks. *sniff*

Okie just to clarify... You can't use a prescribed text as your additional material, even if it's not your prescribed text. Right?? Because I wanted to do the book Romulus, My Father but I just realised it's prescribed. So I might just have to cry now. Yep. :mad1: I'm right right?

Ohhh okay get it now. Thankyou! :)

Okie another stupid (probably) question: "The curve y = ax^3 + bx^2 - x +5 has a point of inflexion at (1, - 2). Find the values of a and b." I suppose you have get two equations and solve them simultaneously or something but I can only get one and I don't know what else to do. Thanks. :)

O yay it works! Thankyou! :)

Okie, this question's annoying me 'cause i know it's really easy but I can't get the same answer as is in the back of the textbook: "Find any turning points on the curve y = (4x^2 - 1)^4 and determine their nature." I worked out that the stationary points are (0, 1), (0.5, 0) and (-0.5, 0)...

Ok I'm just starting Preliminary Economics and I was wondering what textbook is the most effective to use? I assume the other threads refer to HSC textbooks. Thanks! :)

I have morning classes starting 7:55 everyday except one monday a fortnight. And i live an hour by public transport away grrrr.

What's a * mean?

Geo teacher: "Australia is the biggest planet in the universe..."

Re: 2008SC SC Results ~ Wow everyone did really well. Okie mine: English - 90 (meh) Maths - 91 Science - 94 History - 95 Geo - 96 Computing - 95 + a thing saying i satisfactorily completed preliminary 2 unit English Advanced and preliminary 2 unit Mathematics. Clearly I'm...

Good answer.