A math club took a math test. Twelve of the members had an average score of 80 points. Eighteen of the members had an average score of 86 points. What was the class average?

The class average is 83.6

Step-by-step explanation:

:D

83.6

Step-by-step explanation:

12 x 80 = 960

18 x 86 = 1548

960 + 1548 = 2508

12 + 18 = 30

2508/30 = 83.6

The class average is 83.6

answer: input the dimensions of the room to be painted. click the button to calculate the amount of paint and man-hours needed for this job.

interior paint coverage depends on the brand of paint used. the coverage amount is listed on the label of the paint can. use this to adjust the values in the paint coverage section below. paint usually is applied at 350 to 400 square feet per gallon (primer at 200 to 300 square feet per gallon).

step-by-step explanation:

open side up . . 1/50 . . 2%

closed side up . . 5/50 . . 10%

landed on side . . 44/50 . . 88%