(( , will give brainliest to who ))the number of patients treated at dr. white’s dentist office each day for nine days is 16, 13, 15, 6, 21, 20, 12, 9, 12. find the mean, median, mode, and range of the data. if necessary, round to the nearest tenth.15.8, 13, 12, 2713.8, 13, 12, 1513, 15.8, 12, 1513.8, 12, 13, 27

Mean is the average of all the numbers. To find the Mean of a set of numbers, add all the numbers together, and then divide that by the number of numbers.

Mean: (16 + 13 + 15 + 6 + 21 + 20 + 12 + 9 + 12) ÷ 9 = 13.8

Median is the middle number in the sequence, when lined up in numerical order from least to greatest.

Median: 6, 9, 12, 12, 13, 15, 16, 20, 21. The middle number is 13.

Mode is the value that occurs the most often.

Mode: 12 because 12 is the only value that occurs twice, which is the most.

Range is the difference between the smallest and largest value in the sequence.

Range: 21 - 6 = 15. The range is 15.

All together, the answers are 13.8, 13, 12, 15. The answer is the Second choice shown.

Hope that helps!

Mode: 12

Median: 13

Mean: 13.8

Range: 15

-7

step-by-step explanation:

x^2 + 18x + 74 = (x + 9)^2 - 81 + 74

= (x + 9)^2 - 7.

so q = -7.

sorry not sure

step-by-step explanation: