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maths question - trial and improvement
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(Original post by ghostwalker)
No, actual root is 2.8686...
No, actual root is 2.8686...
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#4
(Original post by sqrt of 5)
????????????? the answer must be to 1 dp
????????????? the answer must be to 1 dp
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(Original post by ghostwalker)
So, correct to 1 dec.pl. it's 2.9
So, correct to 1 dec.pl. it's 2.9
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(Original post by ghostwalker)
Which is wrong?
Which is wrong?
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#9
(Original post by sqrt of 5)
2.9 or the other value you gave to me
2.9 or the other value you gave to me
If you want it correct to 1 dec.pl. it's 2.9, as that is closer to the actual root than 2.8.
Going to depend on the exact wording of the question.
I'd interpret it as the latter, 2.9
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(Original post by ghostwalker)
If you want the root as far as the first decimal place, it's 2.8
If you want it correct to 1 dec.pl. it's 2.9, as that is closer to the actual root than 2.8.
Going to depend on the exact wording of the question.
I'd interpret it as the latter, 2.9
If you want the root as far as the first decimal place, it's 2.8
If you want it correct to 1 dec.pl. it's 2.9, as that is closer to the actual root than 2.8.
Going to depend on the exact wording of the question.
I'd interpret it as the latter, 2.9
!!
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(Original post by Notnek)
You haven't written any working.
Tagging in Muttley79 who knows more about the bizarre mysteries of MathsWatch so can help better
You haven't written any working.
Tagging in Muttley79 who knows more about the bizarre mysteries of MathsWatch so can help better
Last edited by sqrt of 5; 2 years ago
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#13
(Original post by sqrt of 5)
it doesn't matter, it should give a mark for the right answer
it doesn't matter, it should give a mark for the right answer
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(Original post by ghostwalker)
2.9 to 1 decimal place means the root is in the inteval
, which it is.
Mathswatch is incorrect.
2.9 to 1 decimal place means the root is in the inteval
, which it is.Mathswatch is incorrect.
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#15
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#17
(Original post by sqrt of 5)
how did you get 2.9 to 1dp? can you show your working out so I can type it into the box?
how did you get 2.9 to 1dp? can you show your working out so I can type it into the box?
If you're not getting 2.9, I suggest posting your working.
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(Original post by Notnek)
Is this a GCSE question out of interest?
Is this a GCSE question out of interest?
(Original post by ghostwalker)
No, I've no idea what sort of working Mathswatch wants.
If you're not getting 2.9, I suggest posting your working.
No, I've no idea what sort of working Mathswatch wants.
If you're not getting 2.9, I suggest posting your working.
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#19
(Original post by sqrt of 5)
yep
yep
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(Original post by Notnek)
Trial and improvement isn't part of GCSE maths anymore. Were you set this work? If not then there's probably no point doing it.
Trial and improvement isn't part of GCSE maths anymore. Were you set this work? If not then there's probably no point doing it.
(Original post by ghostwalker)
No, I've no idea what sort of working Mathswatch wants.
If you're not getting 2.9, I suggest posting your working.
No, I've no idea what sort of working Mathswatch wants.
If you're not getting 2.9, I suggest posting your working.
Notnek ghostwalker Muttley79 I don't wanna open a new post, can you please give me some hints (not the answer) for this question?
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