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Re: 回复: Re: [ Which one do you prefer working with ] Pi or e That's not sad, that's amazing! To OP, you should put in a third and a fourth option "Both" and "Neither".

Oh yeah, of course 2!*2! ... etc = 2!9.

Oh, so you mean do shorter, detached sentences in between some longer ones to provide variety.

Just preparing in advance.

Um, both. Thanks though. Just trying map the concept of belonging and work it all out.

What do you think? Belonging: being a member or part of a certain group or form. An understanding of belonging is essential as it is an inherent human condition. One either belongs or does not belong to an existing entity. This is a key assumption underlying the area of study. There are...

That expression doesn't equal 155925

Find the number of ways in which 6 women and 6 men can be arranged in three sets of four for tennis without restrictions? 12C4.8C4.4C4 = 34650 <--- number of selections for sets of 4 4! = 24 <--- number of arrangements for each set of people That's as far as I can get. Maybe you have...

I hope so. As in I hope I can get myself to do it.

Yeah, I just realised that I am definitely wrong with what I said. :uhoh: Sorry about that.

You could multiply everything by 15 at the start to destroy the fractions first up.

(d) Since XA is a tangent to circle centre y < XAY = 90o (angle between tangent and radius is a right angle). Since triangle AXY is congruent to triangle BXY < XAY = < XBY = 90o (equal matching <'s of congruent triangles AXY and BXY). < XAY + < XBY = 90o + 90o = 180o Therefore < XAY...

This might be easier to understand: Get b to the same value in each ratio. Easiest way to do this is do b in the first ratio multiplied by b in the second ratio = 3 x 4 = 12. Now change each ratio appropriately. a:b = 2:3 = 8:12 <--- x4 to each part of ratio. b:c = 4:5 = 12:15...

I don't know how to do long division with numbers but I do with polynomials. :uhoh: My favourite topics would have to be: - Mathematics --> Basic Arithmetic and Algebra. - Extension 1 --> Trigonometric Formulae. Circle Geometry is cool, even though I suck at it.

3a could be done by a 2-unit student, I think.

As already been said it's 120. Total = 6!/(2!2!) = 180 P's together = 5!/2! = 60 P's separated = total - together = 180-60 = 120. But you're one smart cookie.

4(x+6) > (x+6)² 0 > (x+6)²-4(x+6) 0 > (x+6)[x+6-4] 0 > (x+6)(x+2) -6 < x < -2 Correct. cos75 = cos(45+30) = cos45.cos30 - sin45.sin30 = sqrt3/2sqrt2 - 1/2sqrt2 = sqrt3-1/2sqrt2 Correct. You can rationalise the denominator. m1 = 3, m2 = 3/2 tan@ = |(3-3/2)/1+9/2| = 3/11 @ =...

My handwriting is neat. If only I could increase the speed of my writing.

Re: Year 12 in a week! why am I not scared? Good joke.

Re: Year 12 in a week! why am I not scared? Apathy? Nah, just kidding. I am in the same position. Let's stay this way.