This depends on how accurate an estimate is required. If your answer need only be whole numbers, then 0.69 is slightly larger than 2/3 which is 0.66 = you could estimate 14 - which is 2/3 of 21. -- Alternatively, if your answer ought to be to one decimal place then you could say that it is nearly 70% and multiply 21 by 0.7 and get 14.7
21 x 21 = 441
let X = number X + 1/2 X = 21 1.5 X = 21 X = 14
The GCF of 21 and 84 is 21. Since 21 is a factor of 84, it is automatically the GCF.It is: 21
1 x 21 3 x 7 7 x 3 21 x 1
7 x 3 = 21.Its simple! You just times 7 by 2, then to make it easy, you just add on 7. Updated from 'You Smell' to '7 x 3 = 21' by GalaxyRadio9 ;) x!
069 = 69
it is that this website does not have estimating with percents STUPID webste.
60 x 30 = 1800
480 x 30 = 14400
4000 x 8 = 32000
The answer to that is 2700. If your estimating, the answer will be 3000. Hope that helped!
bellsprout is #069
1 x 21 = 21 2 x 21 = 42 3 x 21 = 63 4 x 21 = 84 5 x 21 = 105 6 x 21 = 126 7 x 21 = 147 8 x 21 = 168 9 x 21 = 189 10 x 21 = 210 11 x 21 = 231 12 x 21 = 252 ...
21 x 21 = 441
0.0653
9261
Two specific cases of pairs of numbers whose product is 21 are: 1 x 21 and 3 x 7. The ratio of their sum to their difference is: 1 x 21 ... (21+1):(21 - 1) = 22:20 = 11 : 10, and 3 x 7 ... (3+7):(7-3) = 10:4 = 5 : 2. To find a general formula, let the larger number be x and the smaller be 21/x. Their sum is x + 21/x = (x^2 +21)/x Their difference is x - 21/x = (x^2 -21)/x Ratio of sum to difference is [(x^2+21)/x] / [(x^2-21)/x] = [(x^2+21)/x] * [x/(x^2-21)] = (x^2+21)/(x^2-21) Check: This formula produces the results found above.