What is the mean score for mr. wilson's test scores? round to the nearest tenth.

 The required mean score is 73.93.

Step-by-step explanation:  We are given to find the mean score for Mr. Wilson's test scores.

We know that

the mean of a given set of scores is equal to the sum of the scores divided by the number of students who scored the marks.

From the given information, we have

3 students with score 40, 1 student with score 50, 4 students with score 60, 6 students with score 70, 4 students with score 80, 8 students with score 90 and 2 students with score 100.

Therefore, the MEAN score of Mr. Wilson's test scores is given by

Thus, the required mean score is 73.93.

use an equation of ratios to determine the amount of gas needed to fill the tank.

    0.2             0.8

  =    

288.75             x

                                                              231 gal

so, 0.2x = (0.8)(288.75 gal), and x = = 1155 gal.

                                                                0.2

it would take 1155 gal. to fill the tank.

the cost would be

1155 gal         $3

* = $3465   (answer)

      1           1 gal

hope this you

step-by-step explanation:

6.48/4 4 goes into 6.48 1.62 times