Answer:
x = 4
Step-by-step explanation:
Since the two points (-1, 14) and (9, 14) lie on the same horizontal line y = 14,
and intersects this parabola. We know by symmetric property of the parabola that the line of symmetry goes through the midpoint of (-1, 14) and (9,14)
at x = (-1 + 9)/2 = 8/2 = 4
at x = 4 is our line of symmetry
the answer is 0
I think 15 cubic meters might be wrong tho
Answer: Proportion - y/x = 1.93/23
y= y=1.93/23x
150
Rate at which volume decrease:
(1 × 2 × 20/100) ÷ 30
= 1/75 m³/min
Total volume:
½ × (1.4 + 0.6) × 2 × 1
= 2 m³
Time = 2 ÷ 1/75
= 150 mins