Mathematics: Post your doubts here!

[3abder7man]

what abt this?

When using area, the factor is squared, so 1/10 becomes 1/100

 

[3abder7man]

View attachment 38916

Can anyone solve just (iii) and (iv)??
I need the anwser immediately!
[email protected]

for iii
(6/9)*(5/8)*(6/10)*(5/9)

Since there is no replacement the number decreases, and since the events are not mutual (they all have to be white) we need to multiply.

for iv, you calculate the probability of having the same colour for both black and white and then you minus them from one.
so 1 - ( (3/9)*(2/8)*(4/10)*(3/9) )

 

[dubi2pro]

finding the values of x for this?

 

[Esme]

finding the values of x for this?

Since this is an identity matrix
x^2 - 8=1
So now solving this:
x^2=9
x=3 or x= -3

 

[Wasif Hassan]

Solution for this??

 

[Hassan Ali Abid]

View attachment 38929
Solution for this??

At x-axis y=0 so x=2 ...A(2,0)
At y-axis x=0 so y=-6 B(0,-6)

for part b ...use the distance formula to calculate the distance ...

for part c .... mid point formula ....
Its a straight forward question.

 

[Esme]

View attachment 38929
Solution for this??

i) The coordinates of A are (x,0) and the coordinates of B are (0,y)
First substitute the coordinates of A in y=3x-6. this will give you
0=3x-6
6=3x
x=2

then substitute the coordinates of B
y=3(0)-6
y=-6

therefore A is (2,0) and B is (0,-6)

ii) you know the A and B coordinates so use the formula for distance between two points to find the length of AB

iii) similarly use the formula for mid point to find the coordinates of M

 

[Ushnaaa]

I wanted to ask,if I want to give maths in this oct/nov will I be able to prepare it properly?Without any hurry?

 

[Esme]

I wanted to ask,if I want to give maths in this oct/nov will I be able to prepare it properly?Without any hurry?

Will you be starting from scratch because if yes, then you won't be able to prepare for it in less than an year. However, it also depends on how dedicated you are and whether you are a quick learner.

 

[Ushnaaa]

No im not starting from scratch Ive studied previously also,btw how much time does it take to finish the whole one book?

 

[exploded diper]

Okay i got the B INVERSE
then whats BB INVERSE?

thts the identity matrix... for BB'

 

[exploded diper]

No im not starting from scratch Ive studied previously also,btw how much time does it take to finish the whole one book?

could you just do me an another favour
it's silly but ,.......
heyy!!
if you can tell me how to do it
question 11,15,16,18 ,19,21,23 & 26 in the file that i attached!!!
thanks

sry i m late... is there any question left tht u didnt undestand?

 

[exploded diper]

what abt this?

135 *100......as the real car is ten times the model image........
and next 408000/1000
135 × 100:as 1 cm :10 cm....so 1cm2:10*10cm2
or 408000 ÷ 1000:-1cm3:1000cm3

 

[rida.12.!!]

sry i m late... is there any question left tht u didnt undestand?

no prob!!
it's alright i'm done with the exam & i understood each question
thx btw!!

 

[exploded diper]

no prob!!
it's alright i'm done with the exam & i understood each question
thx btw!!

well thts a wrap then

 

[rida.12.!!]

well thts a wrap then

sure is!!

 

[exploded diper]

sure is!!

When r ur cies

 

[rida.12.!!]

When r ur cies

starting from may 6th .
what about you??

 

[exploded diper]

starting from may 6th .
what about you??

same

 

[Ushnaaa]

exploded diper You didnt answer my question.
I asked you that how much time does it take to finish the whole one book?