The answer should be 3/2. if x/y = 2/3 then it should be assumed x is equal to 2 and y is equal to 3, therefore if you flip it then you simply flip 2/3 into 3/2 and arrive at the answer.
Answer:
the last one
Step-by-step explanation:
Answer:
A: 82.5
Step-by-step explanation:
Average score of the 4 regular tests = (78 + 72 + 74 + 88)/4 = 78
We are told;
- the regular tests account for 40% of the final grade.
- final exam counts for 20%
- project counts for 10%
- homework counts for 30%
Thus;
weighted mean grade = (40% × 78) + (20% × 79) + (10% × 88) + (30% × 89) = 82.5
