Maths, Addmaths and Statistics: Post your doubts here!

[Dashing Cancerian]

Anytym =)

 

[Dashing Cancerian]

Q4 (b) (i) why cant we take 5+12 or 6+12..???
Q7 (b) (iii)

 

[Spidey21]

Q4 (b) (i) why cant we take 5+12 or 6+12..???
Q7 (b) (iii)

4(B) i would be 5+16 cuz the inequalities are x>2, y<12 and y>2x
so you have to be IN the limits and not even onto it so the biggest value of x or c can be 5 and for y it can be 11
so c + d or 5+11 = 16...

 

[Spidey21]

Q4 (b) (i) why cant we take 5+12 or 6+12..???
Q7 (b) (iii)

for the other part

the P point will be somewhat at the place where there can be a mid point for LM and then you find its area and for area of trapezium it will be Area of Triangle LKN + Area of the triangle LNP...

 

[Dashing Cancerian]

4(B) i would be 5+16 cuz the inequalities are x>2, y<12 and y>2x
so you have to be IN the limits and not even onto it so the biggest value of x or c can be 5 and for y it can be 11
so c + d or 5+11 = 16...

y cant it be 12 for y???

for the other part

the P point will be somewhat at the place where there can be a mid point for LM and then you find its area and for area of trapezium it will be Area of Triangle LKN + Area of the triangle LNP...

thnx...

 

[GetSomeLife]

Q4 (b) (i) why cant we take 5+12 or 6+12..???

According to the inequality they've given, the other 2 (obtained from the graph) are y<12 and y> 2x

Since the sign in between isn't EQUAL TO, you cannot take any points ON the line

If it was y<=12 or y>=2x, then we could take 5+12 or 6+12

Q7 (b) (iii)
the P point will be somewhat at the place where there can be a mid point for LM and then you find its area and for area of trapezium it will be Area of Triangle LKN + Area of the triangle LNP...

 

[Dashing Cancerian]

According to the inequality they've given, the other 2 (obtained from the graph) are y<12 and y> 2x

Since the sign in between isn't EQUAL TO, you cannot take any points ON the line

If it was y<=12 or y>=2x, then we could take 5+12 or 6+12

Q7 (b) (iii)
the P point will be somewhat at the place where there can be a mid point for LM and then you find its area and for area of trapezium it will be Area of Triangle LKN + Area of the triangle LNP...

oh got it... thnx..

 

[GetSomeLife]

oh got it... thnx..

No prob

 

[Nizo]

can someone tell me all the matrices for the shear,strech,enlargment etc.... my math exam is tommorow

 

[Tharindu]

Add maths...question 9..2011..may June...4037-21...it's a confusing relative velocity question...pls help

 

[Dashing Cancerian]

can someone tell me all the matrices for the shear,strech,enlargment etc.... my math exam is tommorow

thx would help... i guess........

 

[asd]

Add maths...question 9..2011..may June...4037-21...it's a confusing relative velocity question...pls help

http://tinypic.com/r/2md2per/6

 

[Spidey21]

y cant it be 12 for y???

thnx...

cuz the limit say y<12..there is no equal to sign...

 

[Mayedah]

http://www.xtremepapers.com/papers/...Calculator Version) (4024)/4024_w11_qp_21.pdf
Question 4 part c

 

[khizer shahab]

http://www.xtremepapers.com/papers/CIE/Cambridge International O Level/Mathematics D (Calculator Version) (4024)/4024_w11_qp_21.pdf
Question 4 part c

for getting a number in one spin is 1/5 therefore for three spin it would be 1/5 x 1/5 x 1/5= 1/125

I am getting this answer but in marking scheme it says 1/25 !!!
can't get myself too !

 

[Spidey21]

for getting a number in one spin is 1/5 therefore for three spin it would be 1/5 x 1/5 x 1/5= 1/125

I am getting this answer but in marking scheme it says 1/25 !!!
can't get myself too !

its like that maybe cuz Katrina is spinning it LOL


well shouldnt it be 1/5+1/5+1/5??

 

[Spidey21]

Add maths...question 9..2011..may June...4037-21...it's a confusing relative velocity question...pls help

Relative Velocity

 

[Wasif`]

Guys, Any Prediction for IGCSE Paper 4 Maths & Physics Paper 1 which is on Monday 14 May? ASAP

 

[Mayedah]

for getting a number in one spin is 1/5 therefore for three spin it would be 1/5 x 1/5 x 1/5= 1/125

I am getting this answer but in marking scheme it says 1/25 !!!
can't get myself too !

Same here i got 1/125 :/

 

[Mayedah]

its like that maybe cuz Katrina is spinning it LOL


well shouldnt it be 1/5+1/5+1/5??

And tht would be 3/5 i guess but the answer is 1/25