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Hello can you plz figure out why a gradient of a curve is never negative ?
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Can you please provide the question?can you figure out why the gradient of a curve is never negative ?
There are several ways to tackle this kind of question.STATISTICS HELP NEEDED
I got the first two parts but I am so confused about solving (iii). Can anyone help me out by providing a good explanation so that I can, too, develop that way of thinking.
There are several ways to tackle this kind of question.
I prefer the plain probability way (as opposed to permutations).
So since Mrs Brown is a front row hogger, she could sit in any of the 3 seats from 14 total i.e. 3/14
Now for Mrs Lin to sit directly behind a student, she can sit anywhere except the front row so that's any of the seats highlighted in red.
View attachment 64998
So that's 11 possible seats but since Mrs Brown has occupied 1 of the 3 seats in front, Mrs Lin can't sit behind her so we have 10 possibilities here i.e. 10/13. (Its 13 because 1 seat is no longer an option and we have 13 to choose from)
Finally, there are 5 students and 12 passengers so the probably of a student sitting in the seat in front of Mrs Lin is 5/12.
So,
\(p=\frac{3}{14}\times\frac{10}{13}\times\frac{5}{12}\)
Basically, we staged the entire scenario step by step here. First, we put Mrs Brown in one of the front seats. Then we put Mrs Lin in one of the possible seats where a student could be in front of her. Then, finally, we forced a student in that seat against their will!
Hope this helps!
Keeping it as simple as possible, a sequence has a limit that it is converging to if it gets arbitrary close to some value if you go out far enough.can someone quickly explain convergent and divergent series to me and how to verify? as math
For Further Mathematics, I'd rather watch lectures/videos on YouTube as its mostly Undergraduate Year 1 and 2 Math (from a 4 year degree) and most of the printed resources are just not on par!Hello
I am taking AS further mathematics this year (9231), and I was wondering if anybody can help me by providing resources/books if possible.
Thank You
But why do we subtract 6a-4????(1-4x+4x2)(1+6c1*ax+6c2*(ax)2)
(1-4x+4 x2)(1+6ax+15a2x2)
For a u need the coefficient of x
6a-4=-1
A=.5
For b
4+15a2-24a=b(put a =.5)
B=-17/4
It went fantastic for all of my studentsHey how did maths a level 9709 paper 32 go?
It went fantastic for all of my students
Can anyone share the answers please?
1. I like to take the step-by-step approach here. We need to find probability that there are exactly 2 of 8 days \(\text{(}^8C_{2}\text{)}\) on which martin is playing computer games when his friend phones. So there are 2 days when he calls in his gaming time and 6 days when he might call outside this window i.e \(\text{(}0.25^{2}\times0.75^{6}\text{)}\).Please help me to solve the questions
In the holidays Martin spends 25% of the day playing computer games. Martin’s friend phones him once a day at a randomly chosen time.
- Find the probability that, in one holiday period of 8 days, there are exactly 2 days on which Martin is playing computer games when his friend phones.
- Another holiday period lasts for 12 days. State with a reason whether it is appropriate to use a normal approximation to find the probability that there are fewer than 7 days on which Martin is playing computer games when his friend phones.
- Find the probability that there are at least 13 days of a 40-day holiday period on which Martin is playing computer games when his friend phones.
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