Maths, Addmaths and Statistics: Post your doubts here!

[kitecrystal]

dont get u

see,square of ratio of lenghs of two similar shapes is same as the ratio of their area,right?
now,in this figure we can make the ratio of areas to get lenghs' ratio,which is formed as given above,..
hope u understand it now...

 

[beeloooo]

beeloooo qp please not ms

sorry
http://clickpapers.net/past papers/math-/4024_w07_qp_2.pdf

 

[beeloooo]

Area of large circle - area of small circle x 7
Divide answer by 6 to get equal area of shaded reion !

why divide it by 6 !!

thanks though!!

 

[AlphaBeta]

see,square of ratio of lenghs of two similar shapes is same as the ratio of their area,right?
now,in this figure we can make the ratio of areas to get lenghs' ratio,which is formed as given above,..
hope u understand it now...

got it

 

[Mayedah]

why divide it by 6 !!

thanks though!!

Because u have to take out area of shaded region and thre are six similar shapes so divide by six to get one !

 

[AlphaBeta]

q8 everything explain

 

[A star]

hey i ws doing same pap

why divide it by 6 !!

thanks though!!

er got to last question

 

[beeloooo]

Because u have to take out area of shaded region and thre are six similar shapes so divide by six to get one !

got it thnks

 

[AlphaBeta]

hey i ws doing same pap
er got to last question

reply post

 

[ashiqbal]

Some tips Regarding P2's!

• make sure u have read the question correct. double or triple read the instructions at the start to understand what the question is about.
• also, read every part question very carefully, even the ones that seem real easy such as finding the surface area and stuff. the question might be asking about only a part of the surface area or something like that
• make sure you read the units correctly. m, km, mm, cm are most easiest to confuse!
• do not go for approximation in figures involving angles. be patient, and work out a way of finding the angle.never everuse a protractor for measuring angles unless it is specified!
• be very cautious in questions involving 3D figures. see which dimensions you would have to use to find the surface area, volume, etc
• in graphs, dont use a ruler to draw curves, or even a part of it! they ask for freehand and if u use a ruler any part of your curve, you lose a mark! In a curve, two points or more can never be connected by a straight line!(that's why it is a curve!)

 

[kitecrystal]

q8 everything explain

u see,after every year,valus of$25 increases by three..,after 8 years,it is 62...
now,when the initial investment is $500,it is equal to $25*20...
hence the value after 8 years will be 62*20=$1240.
for the next portion of graph,u just need 2 plot the x and y corresponding points and answer the questions while using ur graph...............

 

[AlphaBeta]

u see,after every year,valus of$25 increases by three..,after 8 years,it is 62...
now,when the initial investment is $500,it is equal to $25*20...
hence the value after 8 years will be 62*20=$1240.
for the next portion of graph,u just need 2 plot the x and y corresponding points and answer the questions while using ur graph...............

dont get u slowly plz

 

[kitecrystal]

u see,after every year,valus of$25 increases by three..,after 8 years,it is 62...
now,when the initial investment is $500,it is equal to $25*20...
hence the value after 8 years will be 62*20=$1240.
for the next portion of graph,u just need 2 plot the x and y corresponding points and answer the questions while using ur graph...............

do inform if u do not get the graph portion,i'll explain further after drawing it myself,though have my own paper2 tomorrow

 

[HarisLatif]

Some tips Regarding P2's!

• make sure u have read the question correct. double or triple read the instructions at the start to understand what the question is about.
• also, read every part question very carefully, even the ones that seem real easy such as finding the surface area and stuff. the question might be asking about only a part of the surface area or something like that
• make sure you read the units correctly. m, km, mm, cm are most easiest to confuse!
• do not go for approximation in figures involving angles. be patient, and work out a way of finding the angle.never everuse a protractor for measuring angles unless it is specified!
• be very cautious in questions involving 3D figures. see which dimensions you would have to use to find the surface area, volume, etc
• in graphs, dont use a ruler to draw curves, or even a part of it! they ask for freehand and if u use a ruler any part of your curve, you lose a mark! In a curve, two points or more can never be connected by a straight line!(that's why it is a curve!)

want to ask one thing. in circle questions where angle is to be found which is usually about 1 mark should we write down the answer straight away or write too the property which we are applying?

 

[AlphaBeta]

do inform if u do not get the graph portion,i'll explain further after drawing it myself,though have my own paper2 tomorrow

even i hav 2marrow ,qb explain i dot get it

 

[kitecrystal]

dont get u slowly plz

k...u just read the table given in question and see that initial investment is $25; it increases by $3 every year...
right?now there are 20 $25 in $500(we get it by dividing $500 by $20....
after 8 years,value of $25 will be 62 and value of $500 will be 62*20=$1240.(since there are 20 $25 in $500)

 

[AlphaBeta]

k...u just read the table given in question and see that initial investment is $25; it increases by $3 every year...
right?now there are 20 $25 in $500(we get it by dividing $500 by $20....
after 8 years,value of $25 will be 62 and value of $500 will be 62*20=$1240.(since there are 20 $25 in $500)

tips on choosing question

 

[kitecrystal]

tips on choosing question

the one which u can do better...lol
did u understand this question??

 

[AlphaBeta]

the one which u can do better...lol
did u understand this question??

what?

 

[kitecrystal]

what?

q8 part 8 of october 2011,which i explained above.......