- Messages
- 124
- Reaction score
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- Points
- 38
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Decelerating, since the slope of graph gets less steep with time. So speed decreases.View attachment 59950 just a quick question , is it accelerating or decelerating ?
In 6(ii) why is the whole graph shaded if the time limit is 20 < t < 26?
Because, as stated in the question, 's' represents the displacement of P from O (the starting position) at any time 't'. Here, our 't' lies anywhere in between 20 and 26, the limits included.In 6(ii) why is the whole graph shaded if the time limit is 20 < t < 26?
ohhh! thanks for thatBecause, as stated in the question, 's' represents the displacement of P from O (the starting position) at any time 't'. Here, our 't' lies anywhere in between 20 and 26, the limits included.
Yeah! I solved this few pages back : HerePlease anybody give full solution to this question
There are three possible no. of times a red paper clip is taken:
First we need to find the probability that a carton contains more than 1002 ml. This will be 225/900 = 0.25. Now we need to find the value of Z by working backwards from the table. Since we don't have a probability of 0.25 in the table we can find Z from (1_0.25) = 0.75. The value of Z corresponding to a probability of 0.75 is Z=0.674.
At least one damaged tape means (P>=1) which is the same as (1-P (0)).
Means no fortuitous answers.Correct answer legit obtained ?? in MS what does this mean
I got it. Thank you so muchThere are three possible no. of times a red paper clip is taken:
1) 0 times red is taken : white from box A and White from box B
2) 1 time red is taken out: Red from box A and White from Box B OR White from Box A and Red from Box B
3) 2 times red is taken out: Red from box A and Red from Box B
So first consider the 1st situation in which no red is taken out.
P(white from A and White from B) = 1/6 * 3/10 = 3/60
Now the second situation:
P(red from A and white from B OR white from A and red from B) = 5/6 * 2/10 + 1/6 * 7/10 = 17/60
Finally, the third situation:
P( red from A and red from B) = 5/6 * 8/10 = 40/60
So the probability distriburion of X is :
x | P(X = x)
0 | 3/60
1 | 17/60
2 | 40/60
Divide this question into parts. First find all the 3 digit numbers, then find all the 4 digit numbers.
There are 3 courses, and he can take one meal from each course. So just make selections:View attachment 59961
so for the (i) it's (3C1) (5C1 x 2C1) (3C1) = (3)(5x2) (3) =90
and for (ii) 3C1 (5C1 2C1) 3C0 + 3C1 (5C0 2C0) 3C1 + 3C0 (5C1 2C1) 3C1
and so becomes 69
but I've no idea how we got this! somebody help please
GOt that!! just needed a li'l bit of activation energy to start the topic!There are 3 courses, and he can take one meal from each course. So just make selections:
Select 1 meal from the 3 meals in starter course: 3C1
Select 1 meak from 5 meals in main course. Also note that each meal is served with either new potatoes OR french fries. So you need to select any from these 2 as well. So the number of selections will become: 5C1 * 2C1
Finally select 1 meal from the Dessert course: 3C1
The total no. of possible selections can then be calculated by multiplying all the above possible selections, since these events are occuring in side by side: 3C1 * 5C1 * 2C1 * 3C1 = 90
(ii) Similarly in part (ii) you are to adapt a similar method. But now you're restricted to choosing from only courses at a time.
So you can select either Starter and Main couse, Starter and Dessert Or Main Course and Dessert.
The no. of possible selections will remain the same.
Starter + Main Course: 3C1 * 5C1 * 2C1
Starter + Dessert: 3C1 * 3C1
Main course + Dessert : 5C1 * 2C1 * 3C1
^ Sum them up to find the total possible selections. The answer will be the one you have mentioned that is 69.
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