Mathematics: Post your doubts here!

[Fayax555]

See, one easy way to solve these type of questions is to first find out the half of the middle value.

For example im this case x^2-6x+10
half of 6 will be so (x-3)^2
now when you expand this you get x^2-3x-3x+9.
So now to get to the given question you have to add 1.
So p is 3 and q is 1.

snailey, I was about to answer that question. Anyways you did and thank you.

 

[Lady Lyy]

See, one easy way to solve these type of questions is to first find out the half of the middle value.

For example im this case x^2-6x+10
half of 6 will be so (x-3)^2
now when you expand this you get x^2-3x-3x+9.
So now to get to the given question you have to add 1.
So p is 3 and q is 1.

Thanks a lot snailey !
But i was not able to understand half of 6 will be so (x-3)^2 <----- That part.

 

[snailey]

Thanks a lot snailey !
But i was not able to understand half of 6 will be so (x-3)^2 <----- That part.

Like half of six will be 3 so substitute it in the place of p. So u get (x-3)^2.
Your welcome

 

[snailey]

snailey, I was about to answer that question. Anyways you did and thank you.

Haha! Your welcome!

 

[Lady Lyy]

Like half of six will be 3 so substitute it in the place of p. So u get (x-3)^2.
Your welcome

Oh! I got it now

 

[snailey]

Oh! I got it now

All the very best for tomorrow

 

[Lady Lyy]

Thankyou so much. :') Best of luck to you too! ( if you're doing the paper tommorow too.)

 

[snailey]

Thankyou so much. :') Best of luck to you too! ( if you're doing the paper tommorow too.)

Yup! I have my paper tomorrow. Thankyou XD

 

[sa1legend]

Can Anybody do a functions sum like f(x)=g(x) or explain it or something.
Thanks in Advance

Just substitute the equation given eg. f= 2+5x
f(3)
then ... f= 2+5 muliplied by 3 ..... which is = to 17.
ff(3) eg. 2+5x
then.. 2+5multipilied with 3 = 17 <---- that's f of 3.
ff(3) = ur last value ... 17 should be put in x's place
so ...... 2+5 multiplied by 17 = 87


(sorry if I over complicated it)

 

[suri003]

gooodluck ppplll/................

 

[Hamzeh S]

How many significant figures and decimal places should i write my answer to
for example 4250.52 should i just write 4250? and what about 6245994.592 should i just write 624600??
what about decimal places 0.624523 should i just write 0.625?

 

[suri003]

How many significant figures and decimal places should i write my answer to
for example 4250.52 should i just write 4250? and what about 6245994.592 should i just write 624600??
what about decimal places 0.624523 should i just write 0.625?

one dp and 3 s.f....


btw pppl hw was anyone who did paper 2 's paper woahhhh

 

[Fayax555]

How many significant figures and decimal places should i write my answer to
for example 4250.52 should i just write 4250? and what about 6245994.592 should i just write 624600??
what about decimal places 0.624523 should i just write 0.625?

Hi, it will be on the first page. Read the instructions carefully before you start a test.

 

[suri003]

Hi, it will be on the first page. Read the instructions carefully before you start a test.

u r going 2 help me with math paper 4 ......... tats an order .....ehhe lol........plz

 

[yana.mmc]

Anyone who solved math p2 v1 what was K? in the hemisphere section

 

[Fayax555]

Anyone who solved math p2 v1 what was K? in the hemisphere section

Hi, could you describe that question little further.

 

[yana.mmc]

The Hemisphere question it asked for the volume and it asked for the surface area too so they solved the volume and they wanted the surface area as K what was your K
?

 

[Fayax555]

The Hemisphere question it asked for the volume and it asked for the surface area too so they solved the volume and they wanted the surface area as K what was your K
?

I didn't do that paper. But if you could explain the question which you have doubt little bit further (if you remember). We could also can help you.

 

[yana.mmc]

Yeah okay first thing there was a hemisphere picture and it said that the vol of the hemisphere is about 243(Pi) and it said that the Surface area is K and it gave the sphere surface area to be 4(ppi)r^2 and the vol to be 4/3(pi)r^3 so I didnt divide the surface area by two cause I thought the surface area of the hemisphere is 3(pi)r^2 and not 2(pi)r^2 so i dont know which one is right to use

 

[Fayax555]

Yeah okay first thing there was a hemisphere picture and it said that the vol of the hemisphere is about 243(Pi) and it said that the Surface area is K and it gave the sphere surface area to be 4(ppi)r^2 and the vol to be 4/3(pi)r^3 so I didnt divide the surface area by two cause I thought the surface area of the hemisphere is 3(pi)r^2 and not 2(pi)r^2 so i dont know which one is right to use

Curved Surface Area of a Hemisphere is 2πr^2
Total Surface Area of a hemisphere is 3πr^2