Maths, Addmaths and Statistics: Post your doubts here!

[Faizan Muhammmad]

Nai ly ky jana pray ga?

Meray liye to woh ly kr aayengay.

bhola badshah

 

[Fate0]

http://papers.xtremepapers.com/CIE/Cambridge International O Level/Mathematics D (Calculator Version) (4024)/4024_w13_qp_12.pdf
In question 25 part c my answers 15... Whereas the method is fine! And it should be 45 but it's not.
150+(300-20k)=750
Can anyone tell me what's wrong in it? Please?

it's 150 + 20(k-15) = 750
So the 300 gets added to 600, while you're subtracting it.
900/20k = 45

 

[Faizan Muhammmad]

Bhola to tu hai.

Woh kon hain pta hai?

jo marzee ho
tracing paper nae jata hall main

 

[Mahnoorfatima]

http://papers.xtremepapers.com/CIE/...Calculator Version) (4024)/4024_w13_qp_12.pdf
Question 22 part b as well? :/

 

[Fate0]

http://papers.xtremepapers.com/CIE/Cambridge International O Level/Mathematics D (Calculator Version) (4024)/4024_w13_qp_12.pdf
Question 22 part b as well? :/

66.
Angle at centre is twice the angle at circumference.

 

[princess Anu]

http://papers.xtremepapers.com/CIE/Cambridge International O Level/Mathematics D (Calculator Version) (4024)/4024_w02_qp_1.pdf
Q18 part b (i), isn't it that angle CAB is half of angle COB? according to that property angle at the centre?
and in Q23 part a, how do we reflect in such lines ?

 

[funky brat]

How do we know which angles are similar? :/

 

[***amd***]

View attachment 43566
How do we know which angles are similar? :/

ABD = BDC (alt. angles on parall. lines)
ADB = BCD (given)
third pair of angles will itself be equal

 

[funky brat]

Yeh kis type ki possibilty diagram hai? What are the dashes? Why aren't the total possible outcomes 36?

 

[funky brat]

ABD = BDC (alt. angles on parall. lines)
ADB = BCD (given)
third pair of angles will itself be equal

Alternate angles on parallel lines are always equal?

 

[asadalam]

View attachment 43567
Yeh kis type ki possibilty diagram hai? What are the dashes? Why aren't the total possible outcomes 36?
View attachment 43568

There cant be a 22 since there is only one 2 card.likewise 33 can occur only once as they are not replaced.Focus on the diagram and see what it means.

 

[asadalam]

Q17.b)iii

 

[Faizan Muhammmad]

View attachment 43567
Yeh kis type ki possibilty diagram hai? What are the dashes? Why aren't the total possible outcomes 36?
View attachment 43568

does the ms say anyhting about tree or simple chart??

 

[Faizan Muhammmad]

Q17.b)iii

yarr screenshot diya kro !!

 

[funky brat]

yarr screenshot diya kro !!

Ufff nakhrey.

 

[***amd***]

Alternate angles on parallel lines are always equal?

yes.

 

[funky brat]

does the ms say anyhting about tree or simple chart??

Nahi.

 

[Awesome12]

Q17.b)iii

Now see the equation of the first line is

x^3 - 5 = 15 -5x

Just simply solve this

x^3 = 20 - 5x

the given equation is
x^3 = a + bx

Thus

a = 20
b = -5

 

[asadalam]

Now see the equation of the first line is

x^3 - 5 = 15 -5x

Just simply solve this

x^3 = 20 - 5x

the given equation is
x^3 = a + bx

Thus

a = 20
b = -5

Thanks

 

[asadalam]

Now see the equation of the first line is

x^3 - 5 = 15 -5x

Just simply solve this

x^3 = 20 - 5x

the given equation is
x^3 = a + bx

Thus

a = 20
b = -5

btw exams beshak hoon,table hamesha saf hona chaye