This is for all u lovely maths geniuses who are gonna help me solve this hw problem in maths (plzzz do!!) im stuck! heres the question:
Find the number of terms in the following Geometric progression where the last term is given: -
2+4+8+...........512
2007-01-30 07:42:21 · 8 answers · asked by wacko 3 in Science & Mathematics ➔ Mathematics
and i dont want ppl writing the 2 times table! i want a proper formula, i wouldnt have asked this freakin thing if it was tht easy
2007-01-30 07:48:54 · update #1
PPL I WANT A FORMULA!! havent u guyz done GP's?? this is a question of yr 11, plz stop giving babyish answers!
2007-01-30 07:51:31 · update #2
This is for all u lovely maths geniuses who are gonna help me solve this hw problem in maths (plzzz do!!) im stuck! heres the question:
Find the number of terms in the following Geometric progression where the last term is given: -
2+4+8+...........512
2-4-8-16-32-64-128-256-512
9 terms or 2^9
and i dont want ppl writing the 2 times table! i want a proper formula, i wouldnt have asked this freakin thing if it was tht easy
Its not a 2 times table, we are raising 2 to the power of an exponent
PPL I WANT A FORMULA!! havent u guyz done GP's?? this is a question of yr 11, plz stop giving babyish answers!
Formula 2^x that 2 raised to the power of x
The reverse is logb(x) or log2(512) = 9
And at least be polite we are trying to help.
2007-01-30 07:48:44 · answer #1 · answered by Richard 7 · 0⤊ 1⤋
each term is double the previous term
2+4+8+16+32+64+128+256+512 total of 9 terms
sum is 1022
2007-01-30 15:49:40 · answer #2 · answered by yupchagee 7 · 0⤊ 0⤋
This is binaries - 2 to increasing powers.
2, 4, 8, 16, 32, 64, 128, 256... 512
2007-01-30 15:48:08 · answer #3 · answered by Steven D 5 · 0⤊ 0⤋
2^1+2^2+2^3+2^4+2^5+2^6+2^7+2^8+2^9(=512)...like the RAM 512...256...128 :p
2007-01-30 15:51:03 · answer #4 · answered by ddroxana 2 · 0⤊ 0⤋
5
2+4+8+16+32+64+128+256+512
EXPONENTIAL GROWTH
2007-01-30 15:48:48 · answer #5 · answered by Anonymous · 0⤊ 0⤋
q = a_1/a_0 = 2/1 = 2
N = log_q(a_N) = log2(512) = 9
2007-01-30 15:53:37 · answer #6 · answered by Alexander 6 · 0⤊ 0⤋
if you take pfo's answer you'll know that there are 9 terms
2007-01-30 15:49:34 · answer #7 · answered by The Watched 3 · 0⤊ 0⤋
16,32,64,128,256
What, do you not know your powers of 2?
1024,2048,4096,8192,16384,32768,65536....
2007-01-30 15:47:34 · answer #8 · answered by Pfo 7 · 0⤊ 1⤋