3 is the slope. method: y2-y1 over x2-x1
Let's say the test is 100 points.
The 70% mean means that the mean for the 30 students was 70 points. That means 2100 points were scored between all 30 students. (70·30=2100)
20 boys had a mean of 62% or 62 points for our test. That means the boys earned 62·20 points, or 1240 points.
That then means the girls earned 2100 - 1240 points, or 860 points.
Since there are 10 girls, 860/10 = 86 or 86% mean on the test.
Girls rock!
So I think it is Dwat u think it is
Answer:
66mph also please answer my question i need hellp!!
Step-by-step explanation:
121 - 88 = 33
And the time is 30 minutes, but since your looking for miles per _hour_. You must convert it
30 minutes = 0.5 hours
Lastly, you divide distance over the time
33/0.5 = 66 mph
