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Maths year 11 watch

1. (Original post by EnterNamehereplz)
Why don't you check mark schemes?
I don't have the mark schemes. They were given by my teacher X

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2. (Original post by z_o_e)
So I do 23*47 first

And then find 15%

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That is correct, depending on what kind of approach you are taking.

What would we find if we did this?
3. (Original post by RDKGames)
That is correct, depending on what kind of approach you are taking.

What would we find if we did this?
I found the mark scheme on the school system and my answer was correct

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4. (Original post by RDKGames)
That is correct, depending on what kind of approach you are taking.

What would we find if we did this?
How do I find the number of cats? :/

Doesn't specify.

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5. (Original post by z_o_e)
How do I find the number of cats? :/

Doesn't specify.

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That's the last thing you'd fill in.

It gives info about the total amount of males and female.

We know that where M are males and F are females, and we know that therefore we can substitute this into our first equation and find the amount of females and males altogether.
6. (Original post by z_o_e)
Heya, my end of year exam is coming up and I'm doing higher and I'm getting D's I'm currently in year 10 and I know I can do better if I revise. Is anyone else willing to help me with a few questions ?

In year 11 now.
Grade achieved end of year : C
hi, i could help since you are struggling. the way to get better is simply practicing laod of questions especially the topics you are stuggling. PM if you need to know how to get an answer. i'll also explain to you
here is a really good maths web
https://keshmaths.com/
7. (Original post by RDKGames)
That's the last thing you'd fill in.

It gives info about the total amount of males and female.

We know that where M are males and F are females, and we know that therefore we can substitute this into our first equation and find the amount of females and males altogether.
Is it like that
Sorry abit rough

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8. (Original post by z_o_e)
Is it like that
Sorry abit rough

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Almost, not quite.

9. (Original post by RDKGames)
Almost, not quite.

Don't understand ::"/

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10. (Original post by geek567)
hi, i could help since you are struggling. the way to get better is simply practicing laod of questions especially the topics you are stuggling. PM if you need to know how to get an answer. i'll also explain to you
here is a really good maths web
https://keshmaths.com/
Thank you

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11. (Original post by z_o_e)
Don't understand ::"/

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Substitute into and you would have
12. (Original post by RDKGames)
Substitute into and you would have
What do I do after that step

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13. (Original post by z_o_e)
What do I do after that step

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2f +20 = 80
2f= 60
f=30

then work out the rest for example you know females adds to 26 so the third must be 4 etc etc

Also keep up the hard work
14. (Original post by RDKGames)
Substitute into and you would have
Is this correct

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15. (Original post by RDKGames)
Substitute into and you would have
Heya can u help me on this please

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16. (Original post by RDKGames)
Substitute into and you would have

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17. (Original post by z_o_e)

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All probabilities add up to 1.

so then you just multiply with the outcomes.

So in first bag 1 -5/8 = 3/8 of a green

then if you pick red first chances of getting another red is 4/7 meaning the chance of getting a green is 3/7 as they always add up to 1.

If you pick green first 3/8 then picking another green is 2/7 as you removed one green. so chances of getting a red is 5/7. Then you multiply 3/8 (chances of a green) in first bag multiplied chances of red 5/7 (chances of a red) in a second pick then you add that to 5/8 (chances of red) in first bag multiplied by 3/7 chances of green in second one then you add them together.
18. (Original post by EnterNamehereplz)
2f +20 = 80
2f= 60
f=30

then work out the rest for example you know females adds to 26 so the third must be 4 etc etc

Also keep up the hard work

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19. (Original post by z_o_e)

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Looks fine but I will ask you again why dont you just mark schemes to check your work? Also the question for 2 marks you only give one reasons you need to mention the second of overlapping time for example if someone goes on for 1 hour on the dot she needs to tick two boxes because when analysing the data using those boxes there may be problems. People can only give you a rough idea you need to mark it yourself very strictly using the mark schemes.

Btw I am very impressed by your hard work I think an A is really on the cards. Try focus on all your subjects

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