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Maths, Addmaths and Statistics: Post your doubts here!

Spidey21

Spidey21

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Dashing Cancerian said:
Q4 (b) (i) why cant we take 5+12 or 6+12..???
Q7 (b) (iii)
Click to expand...

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

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Dashing Cancerian said:
Q4 (b) (i) why cant we take 5+12 or 6+12..???
Q7 (b) (iii)
Click to expand...

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

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Spidey21 said:
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...:)
Click to expand...

y cant it be 12 for y???
Spidey21 said:
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...:)
Click to expand...
thnx...
 
GetSomeLife

GetSomeLife

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Dashing Cancerian said:
Q4 (b) (i) why cant we take 5+12 or 6+12..???
Click to expand...
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

Dashing Cancerian

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GetSomeLife said:
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...:)
Click to expand...
oh got it... thnx..:)
 
Nizo

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

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Add maths...question 9..2011..may June...4037-21...it's a confusing relative velocity question...pls help
 
Spidey21

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khizer shahab said:
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 :eek: :sick: :confused: !
Click to expand...

its like that maybe cuz Katrina is spinning it LOL


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

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