a man's marksmanship scores are 6 and 10 respectively in two trials. if he wishes to average 9 on three trials. what must his third score be??

11

Step-by-step explanation:

average = sum / count

count = 3 (there are three trials)

average = 9

9 = sum / 3

sum = first score + second score + third score

       = 6 + 10 + third score

9 = (6+10+third score)/3

multiply both sides by 3 to remove the denominator

27 = 6 + 10 + third score

     = 16 + third score

subtract 16 from both sides to isolate the third score

11 = third score

both the histogram and the stem and leaf plot will visually show how many shoppers were of various ages within each range of data.   the histogram does not give us the specific ages of these shoppers unlike the stem and leaf plot.a histogram does not give us a true range of the data because we do not know exactly how old the shoppers were. a stem and leaf plot will give exact ages, so we can determine the exact range along with all measures of center and the others measures of center.   with the histogram, we cannot find any of these.

step-by-step explanation:

the correct answer is c