Answer:
2000J
Step-by-step explanation:
mg=500
h(height)=4
500 x 4 = 2000J
To find the minimum score, you will consider that the mean of 80 must spread out between all possible scores.
Because the last exam counts double, you will consider 5 scores.
5 x 80 = 400 total points are what Tina needs.
400 - (94 + 68 + 88) = 150.
She must earn half of 150 points on her exam to earn an 80% overall grade.
A 75 is what Tina will need.
y-axis
That last sentence though, I died reading that.
Use the distance formula to find the distance between points A and B. The distances between points A and C and between points B and C should be the same (half of the distance between A and B).
Sqrt((x1-x2)^2 + (y1-y2)^2)
So the answers are Yes, Yes, and No