(71+x)/2=78
71+x=156
x=85
Th student needs to score a min of 85
Answer:
The answer is 1st point, 1/2×22.0×23.1
Step-by-step explanation:
You can let XY be the base and XZ be the height of the triangle. Then, by using the formula of the area of triangle, A=1/2×base×height to find the expression.
This is the answer that I came out with. Hope it helps.