Home work help: Algebra 2

tripnip

tripnip

Active member
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=
 
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.
 
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

 
no we finished that this is the intro into series, i had a mental block. but this goes into partial sums.
 
i'll tell you, but first go to my thread and sway https://www.newschoolers.com/ns/forums/readthread/thread_id/693165/

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
 
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