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You dont need to do that either. just sit back, eat, drink, party and the A* will come flying to you -_-
Well, yeah..
But AT LEAST i'll have to work during the exam days. I mean, that's necessary.
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You dont need to do that either. just sit back, eat, drink, party and the A* will come flying to you -_-
Here is a probablity question that has confused me, kindly help me in this. ASAP.
There are 23 boys and 35 girls in the school hall. After x boys and x+4 girls left the hall, the probablity of selecting a boy becomes 2/5. Find the value of x.
Thanks in advance.
Thank you so much. Helped a lot.2/5= (23-x)/(58-2x-4)
2/5= (23-x)/(54-2x)
2(54-2x) = 5(23-x)
108-4x = 115-5x
5x-4x = 115-108
x= 7
According to me, this should be it....but you can take some elses opinion!!
Hope it helps!!
T
Thank you so much. Helped a lot.
Guys I need help
http://papers.xtremepapers.com/CIE/Cambridge International O Level/Mathematics D (Calculator Version) (4024)/4024_w08_qp_1.pdf
Q.12 part b
Please help
f(x) = (4x + 3)/2x
As f(x) = y
& x = f^-1( y)
Therefor;
y = (4x+3)/2x
2xy = 4x+3
4x - 2xy = -3
x(4 - 2y) = -3
x = -3/(4 - 2y)
Therefor;
f^-1( y) = -3/(4 - 2y)
f^-1(x) = -3/(4-2x)
Hope it helps!!
If the probabilities that Jane, Tom, and Mary will be chosen chairperson of the board are 0.5, 0.3 and
0.2 respectively, what is the probability that the chairperson will be either Jane or Mary?
Please explain too.
If the probabilities that Jane, Tom, and Mary will be chosen chairperson of the board are 0.5, 0.3 and
0.2 respectively, what is the probability that the chairperson will be either Jane or Mary?
Please explain too.
Suppose a box contains 3 defective light bulbs and 12 good bulbs. Two bulbs are chosen from the box
without replacement. To find the probability that one of the bulbs drawn is good and one is defective,
what expression would you use?
a.
12 3
15 14
+
b.
12 3 3 2
15 15 15 15
⋅ + ⋅
c.
12 3
15 14
⋅
d.
12 3 3 12
15 14 15 14
⋅ + ⋅
e. none of these
In circle properties questions , do we are supposed to write answer along with reasons or its okay to write only answer .
if we dont mention reasons do they deduct marks ????With reasons, always.
if we dont mention reasons do they deduct marks ????
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