##### MATCH STICK PROBLEM please look below

label Algebra
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schedule 1 Day
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If I have 599 matchsticks to make my last two figures what would the answer be if my equation is 4+3(n-1) and 4+3(n-2)

Oct 3rd, 2015

With the information given, it appears that n = the number of match stick that you have

Therefore,

4 + 3(599 - 1) = 4 + 3(598) = 1798

and

4 + 3(599 - 2) = 4 + 3(597) = 1795

Sep 20th, 2015

4+3(n-1)=m to the n power and 4=3(n-2)=m to the n power the total of the two equal the 599. It is wanting you to find n

Sep 20th, 2015

number 3 is the question

Sep 20th, 2015
img_0159_1_.jpg

Ok. I see now. I'll work this out for you in a moment.

Sep 21st, 2015

We are dealing with an arithmetic sequence which follows the formula:

an = a1 + d(n - 1)    where a1 is the first term of the sequence,  n is the nth term of the sequence, and d is the difference between each term.

We know a1 = 4,  and d = 3,  and the last two terms add up to 599

Then for the last two terms:

4 + 3(n-1) + 4 + 3(n-2) = 599

8 + 6n - 9 = 599

6n - 1 = 599

6n = 600

n = 100

Therefore, the number of matchsticks in the 100th matchstick square is

a100 = 4 + 3(100 - 1)

= 4 + 3(99) = 4 +297 = 301

and the next to the last is 3 less than that, which is 301 - 3 = 298

Sep 21st, 2015

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Oct 3rd, 2015
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Oct 3rd, 2015
Oct 24th, 2017
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