Maths, Addmaths and Statistics: Post your doubts here!

[Suchal Riaz]

B

it is x² so it is degree 2 not one

 

[Usama Jawad]

i want to know if it is necessary that line crosses all the points OR like physics it should be a best-fit line
all the points usually like for Cumulative Frequency Curve,and for graph lines,You have to connect all the points

 

[Suchal Riaz]

reply?

 

[sweetiepie]

Q. A Company sells calendars for Rs 120 each. On Selling 10 or more the salesman can get 10% commission.
On Selling more than 50 he can get 15% additional commission.

a How much does the salesman earn if he sells 20 calendars.
b How much does he earn if he sells 75 calendars

 

[Usama Jawad]

reply?

sry,must have accidentally deleted it,i typed that you have to join all the points usually UNLESS otherwise stated which is never.the usual graphs we get are about cumulative frequency and equation lines in which we have to join all the points.Sorry about earlier.

 

[Saad Mughal]

Q. A Company sells calendars for Rs 120 each. On Selling 10 or more the salesman can get 10% commission.
On Selling more than 50 he can get 15% additional commission.

a How much does the salesman earn if he sells 20 calendars.
b How much does he earn if he sells 75 calendars

For 20 Calenders,
He Earns = (20*120)(10/100) = Rs. 240

For 75 Calenders,
He Earns = (75*120)(25/100) = Rs. 2250

 

[Ashna Mungla]

Oops June 2011 qp-12 no 25(a)
i got the answer 4/3 but in marking scheme its 1/13
please help me to work out this question

 

[Saad Mughal]

10-3(2x-1)=3x+1
10-6x+3=3x+1
13-9x=1
-9x=-12
x=12/9
x=4/3
4/3 is correct. The answer in the mark scheme doesn't even satisfy the equation!

 

[Ashna Mungla]

thank you
what is 0.763 to 1 significant figure?
A: 1
B: 0.8

 

[Saad Mughal]

0.8
Zeros before and after numbers don't count in sig. fig.

 

[Ashna Mungla]

Ah thank once again

 

[Ram97]

0.8
Zeros before and after numbers don't count in sig. fig.

Zeros after a number are only counted as sig.fig when they have a number after them for.eg 804

 

[Saad Mughal]

Zeros after a number are only counted as sig.fig when they have a number after them for.eg 804

That would be zeros in the middle. Before and after a number, they don't count as sig. figures.

 

[Suchal Riaz]

sry,must have accidentally deleted it,i typed that you have to join all the points usually UNLESS otherwise stated which is never.the usual graphs we get are about cumulative frequency and equation lines in which we have to join all the points.Sorry about earlier.

sorry to disturb u but i was talkning about add maths question in which we have to change a curve's equation into a straight line to find some constants etc. in that question however the values of markscheme did no lie on a straight line. i was asking if we have to draw besst-fit lines or there was some problem with answers

 

[Usama Jawad]

sorry to disturb u but i was talkning about add maths question in which we have to change a curve's equation into a straight line to find some constants etc. in that question however the values of markscheme did no lie on a straight line. i was asking if we have to draw besst-fit lines or there was some problem with answers

sorry but I thought you were talking about maths,I dont take addmaths so I guess I cant guide you here

 

[Hamis Hyder]

Hey how u do this one
the average salary of male m employess and f female employees is $a . and avg salary of male are $b. find female average
THERE IS A TEST TOMORROW PLEASE REPLY FAST.........................

 

[Saad Mughal]

sorry to disturb u but i was talkning about add maths question in which we have to change a curve's equation into a straight line to find some constants etc. in that question however the values of markscheme did no lie on a straight line. i was asking if we have to draw besst-fit lines or there was some problem with answers

Have you solved the chapter from classified?

 

[Hamis Hyder]

REPLY FAST PLEASE TEST TOMORROW PLEASE!!!!!!!!!!!!!!!!!!!!!>>>>>>>>>>>

 

[sweetiepie]

For 20 Calenders,
He Earns = (120*9) + (120*110/100)(11) - (120*20) = Rs.132

For 75 Calenders,
He Earns = (120*9) + (120*110/100)(41) + (120*125/100)(25) - (120*75) = Rs. 1242

how m not getting it

 

[Saad Mughal]

Hey how u do this one
the average salary of male m employess and f female employees is $a . and avg salary of male are $b. find female average

Average of m & f = $a
Average of m = $b
Let average of f = x
$a = ($b + x)/2
Hence,
x = 2$a - $b