Maths help

[farahdar]

Solve 10 -3 (2x-1) = 3x + 1
The answer is 1/13..but mine is coming as 4/3..

 

[:: A^]

Oh that, i did that just a few hours back, dont go for the marking scheme... Seems like a mistake.. Even i got 4/3 and my teacher also told its correct!!

 

[C'est]

can anyone help me with Loci?

 

[Waleed007]

can anyone help me with Loci?

Sure, Ask

 

[C'est]

how to draw an angle bisector?

 

[Waleed007]

how to draw an angle bisector?

Follow the steps. : http://www.mathopenref.com/constbisectangle.html

 

[farahdar]

Oh that, i did that just a few hours back, dont go for the marking scheme... Seems like a mistake.. Even i got 4/3 and my teacher also told its correct!!

Thanks

 

[convent2012]

Solve 10 -3 (2x-1) = 3x + 1
The answer is 1/13..but mine is coming as 4/3..

yes me too got 4/3
which year ??

 

[farahdar]

yes me too got 4/3
which year ??

Nov 11

 

[farahdar]

I got another question :
A is the point (0, 2).
(i) The equation of the line AB may be written 3y + 4x = k.
Find the value of k.
Answer is 6.
(ii) Find the coordinates of the midpoint of AB.
For this..how do you find the coordinates of B from the equation?

 

[convent2012]

I got another question :
A is the point (0, 2).
(i) The equation of the line AB may be written 3y + 4x = k.
Find the value of k.
Answer is 6.
(ii) Find the coordinates of the midpoint of AB.
For this..how do you find the coordinates of B from the equation?

(i) 3y+ 4x= k
so place x= 0 and y= 2
than we get k=6

 

[farahdar]

(i) 3y+ 4x= k
so place x= 0 and y= 2
than we get k=6

No i get that..the second part..

 

[farahdar]

  (16/n16) 1/2
My answer is 4/n4..but ms says 4/n8?

 

[farahdar]

find gradient which is -4/3 and put them equal to (y-20/(x-0) to get x,y and then apply formula for midpoint

I got the part about the gradient..but what after it?..

 

[farahdar]

The price of a camera in the sale was $60.
Calculate its marked price if the goods were reduced by 20%?

 

[Vogue]

The price of a camera in the sale was $60.
Calculate its marked price if the goods were reduced by 20%?

x - (20/100)x = 60

solve this equation it will giv u the answer. here x is the original price. wen 20% will be reduced out of it, sale price will equal to 60.
umm did u understand?

 

[ISFSAT]

Solve 10 -3 (2x-1) = 3x + 1
The answer is 1/13..but mine is coming as 4/3..

it is 4/3...

 

[Mayedah]

Solve 10 -3 (2x-1) = 3x + 1
The answer is 1/13..but mine is coming as 4/3..

Do check the examiner reports...it has the correct answer 4/3 .

 

[khalil]

I got another question :
A is the point (0, 2).
(i) The equation of the line AB may be written 3y + 4x = k.
Find the value of k.
Answer is 6.
(ii) Find the coordinates of the midpoint of AB.
For this..how do you find the coordinates of B from the equation?

Well you wind mid point of any line by , y2+y1/2 x2+x1/2

you can find b as you now know what the k is , You know that the graidet is -4/3 .Just replace one random number of X and youll get your Y and hence you can use the formula to answer it . If you want ill answer it on the forums for you .

 

[khalil]

Well you wind mid point of any line by , y2+y1/2 x2+x1/2

you can find b as you now know what the k is , You know that the graidet is -4/3 .Just replace one random number of X and youll get your Y and hence you can use the formula to answer it . If you want ill answer it on the forums for you .

3y=-4x+6
Y=-4/3x + 2

Replace x with 3
Y= -4/3 (3) + 2
Y = -4+2
Y = - 2
so B is (3 ,-2)

but i just realized something , B can be of any value and for different value of B mid point would differ. hmm so this cant be applied .

CAN YOU PLEASE TELL THE YEAR AND QUESTION NUMBER OF THE QUESTION .