(52 + 84) ÷ 2 = 68
Note: mean is the same as average.
Mean = "average" = (sum of samples) / (number of samples)Mean = (1/9) x (98 + 98 + 98 + 45 + 84 + 84 + 52 + 45 + 37) = 641/9 = 71.222 (rounded, repeating)
52 x 84 = 4368
From 52 to 84 is an increase of 61.5%, approx.
52 must be increased 61.54% in order to make 84.
84 minus 32 is 52.
The mean (average) of these numbers is 70.53 to two decimal places. (The final digit is a repeating 3)
20 + 32 = 52 32 + 52 = 84 52 + 84 = 136
The LCM of the given three numbers is: 5460
Since 32 students sing, there are 84 - 32 = 52 students who do not sing. Their percentage is of (52/84) x 100 = 61.9%.
84
Factors of 14... 1,2,7,14 - Factors of 52... 1,2,4,13,26,52 - Factors of 84... 1,2,3,4,6,14,21,28,42,84 - Therefore - the GCF is 2 !
84 16+8=24 24+12=36 36+16=52 52+16=68 68+16=84