The area of the cross section is in the shape of a triangle.
Answer:
Step-by-step explanation:
b
Answer:

Step-by-step explanation:






Answer:
(-4,0) or (7,0)
Step-by-step explanation:
If it crosses, the x-axis, y-value would be 0.
=> x² - 3x - 28 = 0
=> x² - 7x + 4x - 28 = 0
=> x(x - 7) + 4(x - 7)
=> x = -4 or 7
84.37% I think is the answer :)
771.12/913.92 x 100 = 84.37%