anonymous
  • anonymous
Hello, I just want to know what they want me to do because i don't really understand the question. (iv) in total from the end of the nth day to the end of the 2nd day. Simplify your answer. These are the question it asks before; 17. The training programme of a pilot requires him to fly 'circuits' of an airfeild. Each day he flies 3 more circuits than the day before. On the fifth day he flew 51 circuits. Calculate how many circuits he flew: (i) on the first day (ii) in total by the end of the fifth day (iii) in total by the end of the nth day. I also have the answers to everything
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
idk lol just try ur best lol
anonymous
  • anonymous
well thanks, but I have to say that doesn't help much!
anonymous
  • anonymous
This is just a complicated way of writing compound interest.

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anonymous
  • anonymous
Oh, do you have the answer for (iii)? That one'll give you the formula for the rest, because it's the formula a for 'nth', or any day.
anonymous
  • anonymous
Ok. I got the question before that fine- answer is \[\frac{ 2 }{ n }(3n +1)\]
anonymous
  • anonymous
So thats the answer to (iii)
anonymous
  • anonymous
When they say 2nth, do I times the whole thing by two? Because thats what I understand it to mean.
anonymous
  • anonymous
So stick the number of days in the formula as 'n' and work it out.
anonymous
  • anonymous
Ohhh I see
anonymous
  • anonymous
So I would put in 2?
anonymous
  • anonymous
sorry I was just trying to help :(
anonymous
  • anonymous
Haha, no worries. btw, who doesnt like horses?!
anonymous
  • anonymous
I am still not understanding what to do I am afraid.
anonymous
  • anonymous
btw I hope no one doesn't like horses I love them I do riding actually
anonymous
  • anonymous
Question one, 'n' is one. Question two, 'n' is five.
anonymous
  • anonymous
Ok, yeah. I go those answers fine.
anonymous
  • anonymous
got* sorry
anonymous
  • anonymous
The answer is \[\frac{ n }{ 2 }(9n+1)\] can someone just explain how they got that please?
anonymous
  • anonymous
i am not that sure sry... :(
anonymous
  • anonymous
it is asking you to figure out how many flights the pilot made each day
anonymous
  • anonymous
No I mean the last one,where it wants me to calculate how many circuits he flew in total from the end of the nth day to the end of the 2nth day it says. I am not sure how to do that
anonymous
  • anonymous
Oh I just noticed I had a typo in the question there. It was meant to be what I said now- sorry!
anonymous
  • anonymous
so 2nth day not 2nd day
anonymous
  • anonymous
It tells you how many flights were done on the 5th day right?
anonymous
  • anonymous
Yes
anonymous
  • anonymous
14
anonymous
  • anonymous
and it says each day was 3 flights more than the prior day. So to figure out how many flights were done the day before what should you do, add or subtract?
anonymous
  • anonymous
subtract the difference
anonymous
  • anonymous
14? I read it to say that there were 51 flights on the fifth day. So, yes. Subtract 3 from 51, and 3 from that answer to count backwards to the first day
anonymous
  • anonymous
I...I have no clue why I typed 51 there.....
anonymous
  • anonymous
ok, so there were 14 flights on the fifth day, still subtract by 3 for each day
anonymous
  • anonymous
anonymous
  • anonymous
There is all the questions directly from the textbook. I am stuck on (iv)
anonymous
  • anonymous
Ok
anonymous
  • anonymous
ok, n= some number like an X in algebra. It is asking from some day to the end of the second day. So which day comes before the second day?
anonymous
  • anonymous
first day..a
anonymous
  • anonymous
yes, the first day. So how many were flown on the first and second day?
anonymous
  • anonymous
so 2+ 5 = 7?
anonymous
  • anonymous
2 on first day, 5 on 2nd
anonymous
  • anonymous
Yes, good job
anonymous
  • anonymous
Ok?
anonymous
  • anonymous
ok
anonymous
  • anonymous
No, but that isnt the answer
anonymous
  • anonymous
Why isn't it the answer?
anonymous
  • anonymous
Well the answer in the textbook is \[\frac{ n }{ 2 }(9n+1)\]
anonymous
  • anonymous
give me a minute to think about that
anonymous
  • anonymous
Did you look at the picture I sent? I am afraid I made a few mistakes when typing it out (sorry!) so that might help
anonymous
  • anonymous
yes I did
anonymous
  • anonymous
Ok good.
anonymous
  • anonymous
That answer doesn't look correct for this problem. Are you sure you have the right answer for the right problem? Double check
anonymous
  • anonymous
OK checking...
anonymous
  • anonymous
Thats definitely the right one. Even got my mother to check :)
anonymous
  • anonymous
The questions before those I had no problem with.
anonymous
  • anonymous
If we look at day two and place a 2 where the n is that would indicate that there were 19 flights on the second day, and we know that isn't the case. You will have to ask the teacher. Good luck
anonymous
  • anonymous
Actually, I am home-schooled. I am the teacher! But no worries I will figure it out. :D Thanks for your time! I appreciate your trying.

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