A spelling quiz by 20 boys. The mean score for the girls is 8.25 and the mean score for the ken 12 girls and score for all of boys the following, which is closest to the mean is 7.3. Of the students?

(A) 7.66
(B) 7.71
(C) 7.76
(D) 7.78
(E) 7.89

(A) 7.66

Step-by-step explanation:

Total Score= Mean X Number of Scores

For the girls, Mean Score=8.25, Number of Scores = 12

For the boys, Mean Score=7.3, Number of Scores = 20

Total Score for all Students = 99+146=245

Total number of students = 20+12=32

25.2

step-by-step explanation:

2+4x6-8/10= 25.2

we'll this would mean that the dunk tank and the bounce house are the same for 20 hours because the 2 represents that the two activities, and the 20 represents the amount of hours they both are. so with this said, it means that the answer is c. the costs for a dunk tank and bounce house are the same for 20 hours.

c.the costs for a dunk tank and bounce house are the same for 20 hours.

hope this .