Write an equation with a slope of -7 and a y-intercept of (0,4)
1 answer:
You might be interested in
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
8c + 6j = 5p Subtract 6j from both sides
8c = 5p - 6j Divide both sides by 8
c =
8c = 5p - 6j Divide both sides by 8
c =