79.
Mean = (85+82+84+77+82+88)/6 = 498/6 = 83
85
85*73 = 6205
100*82/85 = 96.47% (to 2 dp)
60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87
There is no mode.
It is 83.
24. It is the difference between 97 and 73, the highest and lowest numbers in the set.
Mean = (85+82+84+77+82+88)/6 = 498/6 = 83
64 - 69 - 73 - 77 - 81 - 85 = -321 if carried out from left to right. Subtraction is not an associative operation if the question was about any other expression then more information is required.
To find the numerator of the variance for the class population, first calculate the mean of the test scores: (90 + 75 + 72 + 88 + 85) / 5 = 82. The numerator is the sum of the squared differences between each score and the mean. Calculating these differences: (90 - 82)² = 64, (75 - 82)² = 49, (72 - 82)² = 100, (88 - 82)² = 36, (85 - 82)² = 9. Adding these squared differences gives 64 + 49 + 100 + 36 + 9 = 258. Thus, the value of the numerator is 258.
85
85*73 = 6205
composite numbers are numbers that can be divided by something other than one. in other words, non-prime numbers. thus, these numbers are composite numbers: 86, 96, 85, 87, 99, 100, 82, 84 and these are not composite numbers: 67, 73
100*82/85 = 96.47% (to 2 dp)
The only factor 73 and 85 have in common is 1.
64 ÷ 100 × 85 = 54.4