Could someone please help me?The GCF of 9 an another number is 1. The LCM is 45. What is the number?

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2007-12-08 10:38:06 · 4 answers · asked by joshua m 1 in Science & Mathematics ➔ Mathematics

5. The product of two numbers is the same as the product of their LCM and GCF.

2007-12-08 10:42:15 · answer #1 · answered by ben e 7 · 0⤊ 0⤋

5 works fine. GCF(9,5) = 1 so LCM(9,5) = 9*5 = 45.

2007-12-08 10:45:14 · answer #2 · answered by steiner1745 7 · 0⤊ 0⤋

let the number be n
GCF*LCM=product of the two numbers, so
=9n=9n=1*45
n=5.ANS.

2007-12-08 10:45:21 · answer #3 · answered by Anonymous · 0⤊ 0⤋

5
lcm(a,b) = a*b/GCD(a,b)
Since GCD(9,x) = 1
lcm(9,x) = 45
45 = 9x/1
x = 5 as required.

2007-12-08 10:41:47 · answer #4 · answered by bruno123452000 1 · 0⤊ 0⤋