Maths Help

[Jamesdavid3]

1).Find the co-ordinates of the point A on the line x= -3 such that the line joining A to B(5,3) is perpendicular to the line 2x+5y =12.

2). Using the vertices A(2a,2b), B(-2c, 0), C(2c,0).
(i) prove that the medians of a triangle are concurrent. (a median is a line joining a vertex to a midpoint of the opposite sides; the lines are concurrent if they have a common point of intersection);
(ii) show that the centroid is 2a/3, 2b/3. (a centroid is the point of intersection of the medians).


Opps sorry for Edit, i entered the wrong question! its for my uni. thx

 

[antijoke]

Do your own homework.

 

[p4radox]

I don't understand.

If it's as simple as you're making out, you can do it yourself...

 

[Red Porsche]

Times by 1000 unless i am missing the point....

 

[fanger]

0.063 = 630
0.014 = 140
0.036 = 360

 

[mjt]

are you in year 4 or something?

 

[MooMoo444]

Move the point thingy 3 places to the right

???

Profit!

 

[Flare]

use a calculater OR listen in class -.-

 

[SoSolid]

0.063=63 and so on.

 

[Hatter The Mad]

If these are ment to be in 1000's what would they be??

e.g. 0.063 = 63,000?

0.063
0.014
0.036
0.139
0.134
0.234
0.008
0.090
0.184
0.230
0.185
0.026
0.140
0.100
0.225
0.375
0.195
0.540
0.270
0.080
0.050
0.050
0.040
0.060
0.021
0.084

*facepalm*

Good god, you're stupid (if you're under the age of 13, I take that back. Although, even then...).

 

[uv]

42

 

[Rebelius]

0.063 = 630
0.014 = 140
0.036 = 360

did you go to school?

 

[EffBee]

If these are ment to be in 1000's what would they be??

e.g. 0.063 = 63,000?

0.063
0.014
0.036
0.139
0.134
0.234
0.008
0.090
0.184
0.230
0.185
0.026
0.140
0.100
0.225
0.375
0.195
0.540
0.270
0.080
0.050
0.050
0.040
0.060
0.021
0.084

Well, if your example is correct they are in millions not thousands.

Express each one in standard form - ie 0.040 becomes 4 x 10 to the power of -2

if 1000s 4 x (10 to the power of -2) x (10 to the power of 3) = 4 x (10 to the power of 1) or 40
If millions 4 x (10 to the power of -2) x (10 to the power of 6) = 4 x (10 to the power of 4) or 40,000

 

[MiNxYyY]

Just move the decimal point forward for the amount of 0's.

 

[mjt]

1).Find the co-ordinates of the point A on the line x= -3 such that the line joining A to B(5,3) is perpendicular to the line 2x+5y =12.

Opps sorry for Edit, i entered the wrong question! its for my uni. thx

lies!
that's gcse maths, what crappy uni are you at?!

 

[Jamesdavid3]

lies!
that's gcse maths, what crappy uni are you at?!

Its not that hard but i wasnt there for the lesson.

i goto Oxford

 

[icey_haj]

lies!
that's gcse maths, what crappy uni are you at?!

lol, you like bashing peoples uni's don't you?

Tbh, I can't remember how to do that even though I did A-Level maths 4 years ago

 

[mjt]

Its not that hard but i wasnt there for the lesson.

i goto Oxford

brookes?

somehow i highly doubt someone at oxford would post on OcUK asking for maths help.. and i also highly doubt that anyone doing a degree at oxford would be doing such a low level of mathematics at this stage in the year..

lol, you like bashing peoples uni's don't you?

i'm not serious most of the time
but if he was at oxford, or even any university, how would he have access to a KS1 maths question and post it by mistake without noticing?

 

[antijoke]

I think the solution to the problem is:

OP age < 16.

 

[mjt]

I think the solution to the problem is:

OP age > 16.

don't you mean < 16?