what is the least common multiple of 72 and 130??
2006-10-23 14:26:07 · 7 answers · asked by lykes2win 2 in Education & Reference ➔ Homework Help
take the prime factorization of each.
72 = 2*2*2*3*3
130 = 2*5*13
start with the higher number, since the lcm has to be at least that.
2*5*13
then, take the factors of 72. since you already used one 2 in the factorization of 130, you only need to use two of the 2s from 72. there are no 3s in the factorization of 130, so you'll need both of them.
2*5*13*2*2*3*3 = 4680
2006-10-23 14:38:43 · answer #1 · answered by micci73 2 · 1⤊ 0⤋
well I think the least if you want the lowest would be 2. I find this was just get out calculator and start dividing number if the number goes into 72 divided 2 into 130 in goes into 130. to double check multiply. 2x36=72 and 65x2 = 130. So there you go two in the least common multiply for 72 and 130.
2016-05-22 03:00:47 · answer #2 · answered by ? 4 · 0⤊ 0⤋
72 = 2 x 2 x 2 x 3 x 3 = 2^3 x 3^2 x 5^0 x 13^0
130 = 2 x 5 x 13 = 2^1 x 3^0 x 5^1 x 13^1
(Use the terms with the highest exponents.....)
LCM(72, 130) = 2^3 x 3^2 x 5^1 x 13^1
LCM(72, 130) = 8 x 9 x 5 x 13
LCM(72, 130) = 72 x 65
LCM(72, 130) = 4680
2006-10-23 14:35:40 · answer #3 · answered by wheezer_april_4th_1966 7 · 0⤊ 0⤋
2
2006-10-23 14:30:32 · answer #4 · answered by lenkug 2 · 0⤊ 2⤋
LCM, what is the smallest # that they both go into. 4680 (72*65) and (130*36)
2340 is not the answer as 2340/72=32.5=not an whole #
2006-10-23 14:35:54 · answer #5 · answered by xopenguinox 2 · 1⤊ 0⤋
2 as both the numbers can be divided only by 2 and no other number.
2006-10-23 14:35:24 · answer #6 · answered by webmaster@complete-webs.com 3 · 0⤊ 1⤋
2340; 2 is a factor, not a multiple
2006-10-23 14:35:00 · answer #7 · answered by CJ 2 · 0⤊ 1⤋