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 Post subject: GL Variety maths pack 7
PostPosted: Wed Aug 08, 2018 9:05 am 
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Joined: Thu Mar 06, 2014 1:50 pm
Posts: 127
Good Morning
Dd is struggling with q 46 on this maths pack. If anyone by chance has the pack to hand & can explain the answer it would be very much appreciated. It relates to a series of 3 patterns with triangles and asks which formula represents the number of tiles in the nth pattern in the series. The answer is 1 + 2n.
Sorry I have no idea how to upload a pic of the question.
Thank you in advance


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PostPosted: Wed Aug 08, 2018 10:39 am 
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Joined: Mon May 16, 2011 1:05 pm
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Location: Reading
I can’t help with the question, but info on how to post a picture can be found here

forum_faq.php#a1

Although we normally say pictures are restricted to the rehab section of the forum, we do allow in other areas in circumstances like this.


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PostPosted: Wed Aug 08, 2018 8:17 pm 
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Joined: Sun Jan 17, 2016 6:23 pm
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The first pattern has 3 triangle, second has 5 and third has 7 so the sequence is:

3,5,7... (add 2).

If add 2 we start with 2n ( add 3 start with 3n). If n=1 we have 2n=2 because the first number is 3 we have to add 1 more, therefore 2n +1.

Hope that helps.


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PostPosted: Wed Aug 08, 2018 8:43 pm 
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Joined: Thu Mar 06, 2014 1:50 pm
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Tinkers - Thank you, will take a look at that. Am utterly useless with techie bits!
Ryanpham - Thank you so much. Will show that explanation to my daughter in the morning - am sure she will be able to make sense of that now, thanks again


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PostPosted: Sun Aug 12, 2018 6:15 pm 
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Joined: Thu Mar 06, 2014 1:50 pm
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Can anyone explain why the answer to the question below is £33 please?

Leatown is holding its annual fun run.
Medals are given to all finishers.
The cost, in pence, of n medals is given by the expression
300 + 20n
How much will 150 medals cost?

Thank you in advance


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PostPosted: Sun Aug 12, 2018 6:33 pm 
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Joined: Mon Feb 12, 2007 1:21 pm
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kal12003 wrote:
Leatown is holding its annual fun run.
Medals are given to all finishers.
The cost, in pence, of n medals is given by the expression 300 + 20n
How much will 150 medals cost?

We need to substitute 150 for n as this is how many medals we want.

Cost = 300 + (20 x 150) = 300 + 3000 = 3300p


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PostPosted: Sun Aug 12, 2018 6:42 pm 
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Joined: Thu Mar 06, 2014 1:50 pm
Posts: 127
Thank you Guest55, My daughter now can make sense of that. Will be so glad to have her 11+ out of the way next month!


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