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Re: Q&A - PSLE Math

Posted: Sun Aug 18, 2013 1:18 am
by MathIzzzFun
Michaelia0816 wrote:Need help with coordinate question:

Diagram:
http://t.co/6BaWYM3Fka

Questions:
(a) The coordinates of A and B are ____ and ____ respectively.
(c) The area of Triangle BOC is ____ units
(d) AB cuts the line x = 0 at ____.
(f) The line AB passes through (p,-1), the value of p is ___.
This thread is for P6/PSLE maths.

Pls post your questions at the secondary maths thread.

Moderators- pls move this post to the the secondary thread.

cheers.

Re: Q&A - Math

Posted: Mon Aug 19, 2013 12:21 am
by pinkapple
Hi Michaelia0816,

Your point C coordinates are wrong. the position where it put it, it should be (0,3).

so, is C supposed to be (0,3) or (0,5)?

Help me!

Posted: Tue Aug 20, 2013 9:24 pm
by Robertpattinsonidle
Hi all,
Please help me in solving this question ASAP.


If x^2+5x= 5. find the value of x^3+6x^2




Please note that ^ means power.

Re: Help me!

Posted: Tue Aug 20, 2013 11:47 pm
by elkniwt
Robertpattinsonidle wrote:Hi all,
Please help me in solving this question ASAP.


If x^2+5x= 5. find the value of x^3+6x^2




Please note that ^ means power.
x^3 + 6x^2
= x(x^2 + 6x)
= x(x^2 + 5x + x)
= x(5 + x) [since x^2 + 5x = 5]
= x^2 + 5x
= 5

Re: Help me!

Posted: Thu Aug 22, 2013 7:13 pm
by Robertpattinsonidle
elkniwt wrote:
Robertpattinsonidle wrote:Hi all,
Please help me in solving this question ASAP.


If x^2+5x= 5. find the value of x^3+6x^2




Please note that ^ means power.
x^3 + 6x^2
= x(x^2 + 6x)
= x(x^2 + 5x + x)
= x(5 + x) [since x^2 + 5x = 5]
= x^2 + 5x
= 5
Thanks!
another question!
if,

x^2-3xy 5y
_______ = ___
y^2-2z 3

find the positive value of x when y=2 and z=-5. Round off your answers to 3 significant figures.

Re: Help me!

Posted: Fri Aug 23, 2013 7:47 pm
by jieheng
Robertpattinsonidle wrote:

another question!
if,

x^2-3xy 5y
_______ = ___
y^2-2z 3

find the positive value of x when y=2 and z=-5. Round off your answers to 3 significant figures.

Image

Re: Help me!

Posted: Sun Aug 25, 2013 11:57 am
by Robertpattinsonidle
jieheng wrote:
Robertpattinsonidle wrote:

another question!
if,

x^2-3xy 5y
_______ = ___
y^2-2z 3

find the positive value of x when y=2 and z=-5. Round off your answers to 3 significant figures.

Image
Thanks! Another one!

Two squares, each s on a side, are placed such that the corner of one square lies on the centre of the other. Describe, in terms of s, the range of possible areas representing the intersections of the two squares.

Re: Help me!

Posted: Sun Aug 25, 2013 11:59 am
by kiasuparentsirock
Robertpattinsonidle wrote:
jieheng wrote:
Robertpattinsonidle wrote:

another question!
if,

x^2-3xy 5y
_______ = ___
y^2-2z 3

find the positive value of x when y=2 and z=-5. Round off your answers to 3 significant figures.

Image
Thanks! Another one!

Two squares, each s on a side, are placed such that the corner of one square lies on the centre of the other. Describe, in terms of s, the range of possible areas representing the intersections of the two squares.
You should post it on sec school MA:
http://www.kiasuparents.com/kiasu/forum ... &start=910

Re: Any recommendations for Sec 1 Maths Assessment Book

Posted: Sun Nov 03, 2013 2:31 pm
by lost boy
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Re: Any recommendations for Sec 1 Maths Assessment Book

Posted: Tue Nov 05, 2013 12:47 pm
by aceurmaths
Augs wrote:Hi. Does anyone know of any good Sec 1NA Maths assessment book? I prefer it to go topic by topic, instead of in exam papers format. I went to Lot One popular and could only find 2 types of Maths assessment books for Sec 1 NA, and both are in exam papers format. Any recommendation on which assessment books and which outlet to get?
Casco maybe good as there are really a lot of questions but u have to be selective on the questions because not all of them are insync to the current syllabus. You have to decipher which are the more common ones so as not to waste too much time doing unecessary questions.