Mathematics: Post your doubts here!

[ahmadumar]

Anyone got a reliable maths formula sheet (not notes/formula book)??? I'll be grateful, considering I've got p22 tomorrow.

u dont need a formula sheet
what do u want for? :3

 

[Xylferion]

Anyone got a reliable maths formula sheet (not notes/formula book)??? I'll be grateful, considering I've got p22 tomorrow.

Sure here's one right here.

 

[slisjunknown]

View attachment 41244



pls solve this

Read the previous part of this question
When you expand (a+b)^2, the answer is a^2+2ab+b^2

Now look at the b) part. If you say 2*ab=2*7..it means 14
so a^2+14+b^2=(a+b)^2

a^2+14+b^2=36(a+b=6)
a^2+b^2=36-14
a^2+b^2=22

That's it...

 

[Harsh Poddar]

great site it is banned over here in ksa i cant even access it

Try http://server-poddarh.rhcloud.com/paper.html

 

[My Name]

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Mathematics (0580)/0580_w10_qp_22.pdf
question19 part b
ahmadumar
Awesome12

 

[ahmadumar]

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Mathematics (0580)/0580_w10_qp_22.pdf
question19 part b
ahmadumar
Awesome12

u have already found BD. Thus, BM is the half of BD. So, Write BM. And u also know PB. use pythagoras theorem to work out PM

 

[My Name]

Sure here's one right here.

hey
i have nevr use dthe formula at the end of the booklet!

 

[My Name]

u have already found BD. Thus, BM is the half of BD. So, Write BM. And u also know PB. use pythagoras theorem to work out PM

I GOT WRONG ANSWR

 

[Xylferion]

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Mathematics (0580)/0580_w10_qp_22.pdf
question19 part b
ahmadumar
Awesome12

Ok you got the base ABCD. Find the length of the diagonal DB.

Which is √(10^2+10^2) according to Pythagoras. You should get 14.1.

Now half of this will give you MB which = 7.05.

You already have PB = 8. Use Pythagoras again. MP = √(8^2 - 7.5^2)

MP = 3.78 cm.

 

[My Name]

(b) 3.74 or 3.78
is theanswr how!

 

[Xylferion]

ahmadumar
My Name
Xylferion
View attachment 41287

-b will get you to a point under E. To get to E just add c.

so -b+c. Is that the answer?

 

[Xylferion]

(b) 3.74 or 3.78
is theanswr how!

I just showed you how to do it... look for it.

 

[My Name]

Ok you got the base ABCD. Find the length of the diagonal DB.

Which is √(10^2+10^2) according to Pythagoras. You should get 14.1.

Now half of this will give you MB which = 7.05.

You already have PB = 8. Use Pythagoras again. MP = √(8^2 - 7.5^2)

MP = 3.78 cm.

I just showed you how to do it... look for it.

YES thanku !

 

[ahmadumar]

I GOT WRONG ANSWR

 

[Xylferion]

plz i cant understand like whats the route

Ok position vector means going from the origin to the letter. The origin is always O. So you have to go from O to E. First of all the lets get under E. To get under E, You go -b from O and now you're under E.

To get to E we just add c, because c is going straight up vertically.

 

[Evangeline]

can someone please solve this thanks.

 

[ahmadumar]

dude doubt it is one the last page

bro OE is the same as BC. So find out BC. BC= -b+c

 

[Mavilda Bucket]

Read the previous part of this question
When you expand (a+b)^2, the answer is a^2+2ab+b^2

Now look at the b) part. If you say 2*ab=2*7..it means 14
so a^2+14+b^2=(a+b)^2

a^2+14+b^2=36(a+b=6)
a^2+b^2=36-14
a^2+b^2=22

That's it...

thnx alotttttttttttttttttttttt

 

[ahmadumar]

can someone please solve this thanks.

(a) part

 

[Mavilda Bucket]

this too plsss