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## John's Content

There have been 668 items by John (Search limited from 18-August 21)

### #91417 Quadratic question

Posted by John on 30 November 2006 - 10:03 PM in Mathematics

and after that try using to 2 nearest factors of 15 both positive and negative factors.

### #91408 Quadratic question

Posted by John on 30 November 2006 - 09:06 PM in Mathematics

Then solve

3x - 15x + 11= a(x+b) + c

for a.

### #90163 Trig help

Posted by John on 13 October 2006 - 06:53 PM in Mathematics

*Expand sin(A + B + C) in terms of sin A, sin B, sin C, cos A, cos B, cos C.*

How would i tackle this?

They also ask the same for cos(A + B + C)

Thankies =D

### #100155 What chances would you give me?

Posted by John on 22 August 2007 - 09:44 AM in After School

### #92119 [Quadratic Theory] h/w

Posted by John on 17 December 2006 - 12:27 PM in Problem Questions

For question seven use b

^{2}- 4ac = a negative number, to find the smallest possible integer value for K.

### #92189 Oxford

Posted by John on 19 December 2006 - 06:20 PM in After School

EDIT: I see it has been moved now.

### #91011 Need help on dropping a subject

Posted by John on 15 November 2006 - 11:31 PM in New Sixth Years

So you are in the clear.

### #94851 Trig Question

Posted by John on 14 March 2007 - 10:41 PM in Mathematics

take the cos over to the other side to get

x+15 = cos^-1(2/3)

x+15 = 48.1897

then solve for x

x = 48.1897 - 15

x = 33.1897

x is in degrees btw

### #93634 Can someone go over a past paper with me, as im struggling and have an exam o...

Posted by John on 03 February 2007 - 08:59 PM in Mathematics

MSN address is in my profile

### #92710 unit 2 - outcome 3 - trigonometry

Posted by John on 11 January 2007 - 08:06 PM in Problem Questions

### #99184 Need a little Help.

Posted by John on 04 June 2007 - 06:41 PM in Mathematics

### #94187 Help with a past paper question

Posted by John on 21 February 2007 - 07:45 PM in Mathematics

### #91043 Another quadratics question.

Posted by John on 17 November 2006 - 03:04 PM in Problem Questions

Now what you need to do is subsitute x and y for the co-ordinate (0,18).

And then solve for a.

Tell me what you get for your answer and I'll let you know if it is correct.

### #91463 Integration

Posted by John on 02 December 2006 - 07:14 PM in Mathematics

Break the fraction up and use the rules opf indices to simplify and then integrate.

For the second one:

Multiply out the bracket and do the same from there as you did with the first one.

I know there is a simpler way, but i cant remember how to do it.

### #94938 circles

Posted by John on 17 March 2007 - 06:40 PM in Mathematics

from there you find the line perpendicular to to the radius

I think you can go on from there.

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