Correct answers only !
mark has the following averages in his amdm math class:
homework: 95
quiz average: 80
test average: 67
final exam: 60
if the teachers weights homework at 10%, quizzes at 20%, tests at 50%, and final exam at 20%, what is marks class average?
a. 61%
b. 71%
c. 74%
d. 82%

B.71%

Step-by-step explanation:

Weighted Mean is (All X * W)/sum of W

X for averages and w for weight

           X        W        (X*W)

HW     95      10          980

Quiz    80      20        1600

Test     67      50        3350

Final    60     20          1200

Total               100       7100

Weighted Mean = 7100/100 = 71%

percentage - 25%

probability - 0.25

we know,

total amount of students in class = 20

total boys = 10

total girls = 10

no of girls who wear glasses = 10/2 = 5

probability of choosing a girl with glasses is =

number of girls wearing glasses/total number of students in the class = 5/20

thus, percentage of selecting a girl wearing glasses will be

= 5/20 × 100

= 5 × 5

25%

therefore,

probability will be 0.25

happy to

pls mark as brainliest

54/3 is 18 so 18 is your answer