Answer:
The mean of the combined group is 76.67 ≈ 77
Step-by-step explanation:
- The sum of the grades in Tom's group is 20×70 = 1400
- The sum of grades in Alice's group is 10×90=900
- The sum of gradees in the combined group is =1400+900=2300
- Then the mean grade of the combined group is

where
- 2300 is the sum of the all grades in the combined group
- 30 is the total number of people in the group
The correct answer is D because you already have one side and one angle that are equal so you need one more side
Answer:
14?
Step-by-step explanation:
70% of 60,000,000 is 42,000,000
Answer:
B) 120
Step-by-step explanation:
180 - 60 = 120
Hope that helps!