Mathematics: Post your doubts here!

[misscute406]

yes!!

functions was easiest!
did you get 11 as x for the square thingy
and 8 for length fg of the triangle

 

[masterex567]

yes!!

the lower and upper bound thing was 7?

 

[misscute406]

no for the m and n thing. i used simultaneous equations and got the answer...

i did factorisation method!!
question-----> x^2+4x-6
(x+2) (x+2)=x^2+4x+4-10=x^2+4x-6!!

 

[misscute406]

the lower and upper bound thing was 7?

it was 120 and 114
120-114=6
i did 5.5<6<6.5
final answer i wrote 6.5

 

[masterex567]

i did factorisation method!!
question-----> x^2+4x-6
(x+2) (x+2)=x^2+4x+4-10=x^2+4x-6!!

waitt so how do you get the value of m and n using this?

 

[misscute406]

the value of m=2

(x+2)^2 and n=-10

 

[misscute406]

got it??

waitt so how do you get the value of m and n using this?

 

[NOneed2speedd]

can you explain how to use square technique for that number please?
also, do you know if they accept different method than specified in ms?

It's just a random question

 

[Manahil.Sheikh]

it was 120 and 114
120-114=6
i did 5.5<6<6.5
final answer i wrote 6.5

No, I believe it was 7. You need the upper bounds first before subtracting. ie: 120.5-113.5 = 7

 

[NOneed2speedd]

the lower and upper bound thing was 7?

I got 6

 

[masterex567]

got it??

not really..
how do you complete the square?

 

[misscute406]

No, I believe it was 7. You need the upper bounds first before subtracting. ie: 120.5-113.5 = 7

Shit!! I didn't do that!! :'( :'(

 

[misscute406]

that means you people would get really good marks!! (Y)

 

[moh321]

how did you solve the barn trapizium question ?

 

[moh321]

why man... It was easy just u had to use vol.discharge=crossara×speed×time

by this eqn. i got
3.8/(1/60)= 228 I got untill this and forgot to multiply by 3 will I lose many marks or just 1 and what about the barn trapezium question ?

 

[NOneed2speedd]

by this eqn. i got
3.8/(1/60)= 228 I got untill this and forgot to multiply by 3 will I lose many marks or just 1 and what about the barn trapezium question ?

u nay get 1 mark

 

[NOneed2speedd]

how did you solve the barn trapizium question ?

As far as i remebr
1/2*6*(8+5)=39
39*2=78

 

[misscute406]

As far as i remebr
1/2*6*(8+5)=39
39*2=78

thats right!! even i got 78!! hi5!!

 

[misscute406]

and the next question was what??

As far as i remebr
1/2*6*(8+5)=39
39*2=78

 

[masterex567]

So paper 4 will most likely feature transformations, compound and simple interest, and function graphs