It depends on whether you mean 28 mm x 28 mm x 3 mm or 28 metres x 28 metres x 3 metres or some other units. Maybe the answer should be 27 and let you figure out 27 lots of what.
1. (28 = 2 x 2 x 7, 45 = 3 x 3 x 5)
There are 3 factor pairs of 28. 28 = 1 x 28 28 = 2 x 14 28 = 4 x 7
% rate= (3/28) x 100%= 0.1071 x 100%= 10.71%
3 x 5 = 15 2 x 3 x 3 = 18 2 x 2 x 7 = 28 2 x 2 x 3 x 3 x 5 x 7 = 1260, the LCM
The answer is 5. You compute it as follows: 5x+3 = 28 5x = 28-3 x = 28-3/5 x = 25/5 x = 5
It depends on whether you mean 28 mm x 28 mm x 3 mm or 28 metres x 28 metres x 3 metres or some other units. Maybe the answer should be 27 and let you figure out 27 lots of what.
1. (28 = 2 x 2 x 7, 45 = 3 x 3 x 5)
3
There are 3 factor pairs of 28. 28 = 1 x 28 28 = 2 x 14 28 = 4 x 7
% rate= (3/28) x 100%= 0.1071 x 100%= 10.71%
lcm(28, 24) = 168 28 = 2^2 x 7 24 = 2^3 x 3 lcm = 2^3 x 3 x 7 = 168
5 x 3! - (4 - 2) = 30 - 2 = 28 5 x 3! - (4 ÷ 2) = 30 - 2 = 28 (2 x 3 x 5) - √4 = 30 - 2 = 28
3 x 5 = 15 2 x 3 x 3 = 18 2 x 2 x 7 = 28 2 x 2 x 3 x 3 x 5 x 7 = 1260, the LCM
The first ten positive integer multiples of 28 are: 1 x 28 = 28 2 x 28 = 56 3 x 28 = 84 4 x 28 = 112 5 x 28 = 140 6 x 28 = 168 7 x 28 = 196 8 x 28 = 224 9 x 28 = 252 10 x 28 = 280
3 and 28 3 - 28 = -25 (or 28 - 3 = 25) 3 x 28 = 84
28 = 2 x 2 x 7, 54 = 2 x 3 x 3 x 3 so only common factor is 2