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GCSE Maths Homework Help

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Hello, I am in Year 10. I need help with my maths homework with questions 3. a,b and 4. a,b,c. I have done the questions but I don't think they are right. I would really appreciate it if you could help, if you can't see any of the questions I'll gladly post them for you clearly. Thank you in advance.


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(edited 9 years ago)
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Original post by BobbiBlue
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Hello, I am in Year 10. I need help with my maths homework with questions 3. a,b and 4. a,b,c. I have done the questions but I don't think they are right. I would really appreciate it if you could help, if you can't see any of the questions I'll gladly post them for you clearly. Thank you in advance.


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All of question 3 is correct, well done. 4.a is also correct. I can't read your answer to 4.b though. Your answer to question 4.c. is close, but why did you square root the D? The kt^2 term is one big chunk, you just need to subtract it from both sides. No need to square root!
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Reply 3
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BobbiBlue
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Original post by Chlorophile
All of question 3 is correct, well done. 4.a is also correct. I can't read your answer to 4.b though. Your answer to question 4.c. is close, but why did you square root the D? The kt^2 term is one big chunk, you just need to subtract it from both sides. No need to square root!


Oh thank you very much x


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Reply 4
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BobbiBlue
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Can someone please explain these questions to me, I still don't understand.

1. Make u the subject of the formula
D= ut+kt^2

2. Work out the value of u


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Original post by BobbiBlue
Can someone please explain these questions to me, I still don't understand.

1. Make u the subject of the formula
D= ut+kt^2



If you could do

D = au + b

Then you can do the question you asked
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BobbiBlue
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Original post by TenOfThem
If you could do

D = au + b

Then you can do the question you asked


I don't understand where the b has come from.


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Original post by BobbiBlue
I don't understand where the b has come from.



I made a question up

Are you saying that you would NOT be able to re-arrange D=au+b to give u as the subject?
Reply 8
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BobbiBlue
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More questions that I need explaining,

3. A) Work out the value of a when p= 84 and r= 6.7 in the formula:
P= πr + 2r + 2a
B) Make R the subject.

4. Expand and simplify (x-y)^2

5. Rearrange a(q-c)=d to make q the subject

6. Make h the subject of the formula d= square root of 3h/2

7. The first five terms of a sequence are: 6, 11, 18, 27, 38
Find an expression in terms of n for the nth term of this sequence.

Sorry about all of this, I really appreciate your help.



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Reply 9
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BobbiBlue
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Original post by TenOfThem
I made a question up

Are you saying that you would NOT be able to re-arrange D=au+b to give u as the subject?


Oh right, yes I think I can do it. Is it d-b/a?


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Original post by BobbiBlue
Oh right, yes I think I can do it. Is it d-b/a?


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With brackets, yes (d-b)/a


Your question is virtually identical
Reply 11
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BobbiBlue
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Original post by TenOfThem
With brackets, yes (d-b)/a


Your question is virtually identical


Oh yeah, thank you for making me see sense :smile:


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