to get 225: 1 x 225 5 x 45 9 x 25 15 x 15
15 x 15 = 225 225 x 225 = 50625
First you need to eliminate one of the letters. In this case, by adding the two equations together we can eliminate y. x - y = 90 + x + y = 360 __________ 2x = 450 x = 225 if x = 225 we can put this back in to the first equation to find y. x - y = 90 ----- 225 - y = 90 ----- 225 - 90 = y ----- 135 = y Now, knowing that x = 225 and y = 135 we can double check that this is right by trying these numbers in the second equation. x + y = 360 ----- 225 + 135 = 360!! Correct!
225 = 3 x 3 x 5 x 5
3 x 3 x 5 x 5 = 225
The factor pairs of 225 are 1 x 225, 3 x 75, 5 x 45, 9 x 25, and 15 x 15
x/100 = 99/225 x = (99 x 100)/225 x = 9900/225 x = 44 The answer is 44%
to get 225: 1 x 225 5 x 45 9 x 25 15 x 15
1 x 225, 3 x 75, 5 x 45, 9 x 25, 15 x 15 = 225
15 x 15 = 225 225 x 225 = 50625
First you need to eliminate one of the letters. In this case, by adding the two equations together we can eliminate y. x - y = 90 + x + y = 360 __________ 2x = 450 x = 225 if x = 225 we can put this back in to the first equation to find y. x - y = 90 ----- 225 - y = 90 ----- 225 - 90 = y ----- 135 = y Now, knowing that x = 225 and y = 135 we can double check that this is right by trying these numbers in the second equation. x + y = 360 ----- 225 + 135 = 360!! Correct!
1, 3, 5, 9, 15, 25, 45, 75, 225 (1 x 225, 3 x 75, 5 x 45, 9 x 25, 15 x 15).
3 x 3 x 5 x 5 = 225
225 = 3 x 3 x 5 x 5
225 = 3 x 3 x 5 x 5
225 = 3 x 3 x 5 x 5
3 x 3 x 5 x 5 is the prime factorization of 225.