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Home work help: Algebra 2

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tripnip
Posts: 1882 - Karma: 482
hey guys i am stuck on this problem
find the sum of the first 75 even numbers, starting with 2
i'm just having a mental block.
any help would be awesome
- =alex=
May 8 2012 11:57PM
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Radio
Posts: 946 - Karma: 12
this is sad
May 8 2012 11:58PM
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JakeAssBeatClap
Posts: 6673 - Karma: 2,537
are you fucking kidding me?

1,406

add up all even numbers 2,4,6,8 etc. until 74. the last even number before 75.
May 8 2012 11:59PM
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tripnip
Posts: 1882 - Karma: 482
nope. The answer from the book is 5700

May 9 2012 12:00AM
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tripnip
Posts: 1882 - Karma: 482
it is not up to 75 it is the first 75 even numbers
May 9 2012 12:02AM
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soulskier
Posts: 17806 - Karma: 3,841
then go up to the 75th even number, 150?
May 9 2012 12:02AM
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JakeAssBeatClap
Posts: 6673 - Karma: 2,537
Oh well, then still equally as easy. Just more digits to ADD.

Good luck graduating friend.
May 9 2012 12:03AM
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act.resist
Posts: 8875 - Karma: 513
you seem tense, do you need a cold pop from the fridge?
May 9 2012 12:04AM
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navierSTOKED
Posts: 858 - Karma: 33
HABC, I'm a big fan of yours, but it's the first 75 even numbers.. not even numbers up to 75..  it's 5700
May 9 2012 12:05AM
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JakeAssBeatClap
Posts: 6673 - Karma: 2,537
perhaps a cold beverage could do me well.
May 9 2012 12:06AM
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tripnip
Posts: 1882 - Karma: 482
What?
May 9 2012 12:07AM
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JakeAssBeatClap
Posts: 6673 - Karma: 2,537
Thanks man, I am also a big fan, i obviously just mis read his post, which is my bad, but still. It's a really fucking simple addition problem and had I not mis read it I'm sure I would have come up with the correct value.
May 9 2012 12:09AM
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navierSTOKED
Posts: 858 - Karma: 33
Algebraically, it's the first number (2), plus the last (150), multiplied by the amount of numbers (75) and divide by 2
May 9 2012 12:10AM
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JIBpsy^^
Posts: 2851 - Karma: 36
This is what you do in your algebra 2 class? mutherfucker i am dividing by fractions and doing quadratics and general getting pounded aggressively by a whole slew of numbers and your doing simple shit like that? lucky bastard

May 9 2012 12:11AM
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navierSTOKED
Posts: 858 - Karma: 33
I concur
May 9 2012 12:11AM
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tripnip
Posts: 1882 - Karma: 482
no we finished that this is the intro into series, i had a mental block. but this goes into partial sums.
May 9 2012 12:13AM
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blackmamba.
Posts: 969 - Karma: 56
5700. shit takes 2 seconds with Excel
May 9 2012 12:17AM
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alvy.
Posts: 2134 - Karma: 377
Are you in "Special" Algebra 2?
May 9 2012 12:17AM
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Yeezy
Posts: 1652 - Karma: 206
Who said you could math?
Burn this bitch
May 9 2012 12:21AM
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tripnip
Posts: 1882 - Karma: 482
your second sig just goes with this so much.
May 9 2012 12:22AM
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hot.pocket
Posts: 4229 - Karma: 10,650
You sound like a little bitch.
May 9 2012 12:47AM
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tBatt
Posts: 9632 - Karma: 580
I read this as "a cold poop"

......
interesting.


Alaskan Pipeline?
May 9 2012 12:58AM
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whoa-dere
Posts: 10596 - Karma: 7,103
i'll tell you, but first go to my thread and sway























































did you sway?




























you better have.





























ok so i'll do this with arithmetic sequence. the first number is 2, so a=2
it's every even number, so the difference between every number in this sequence is 2, d=2
this pattern of 2, 4, 6, 8, ... continues for 75 terms, n=75

the equation for this is Sum=2/n[2a+(n-1)d]
=37.5(4+74x2)
=37.5(152)
=5700
chea
May 9 2012 12:58AM
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An10a_Eng
Posts: 2505 - Karma: 26
another example of why this country needs to invest more into our education system
May 9 2012 4:37AM
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act.resist
Posts: 8875 - Karma: 513
the constitution
May 9 2012 1:36PM
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Velocirooster
Posts: 336 - Karma: 38
This thread is dildo
May 9 2012 1:46PM
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riddsicle
Posts: 684 - Karma: 264

May 9 2012 2:11PM
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