Answer:
Rui will reach his lowest altitude after diving for 10 seconds
Step-by-step explanation:
In the quadratic equation y = ax² + bx + c, the coordinates of the lowest or the highest point is (h, k), where
- h = and k = y at x = h
In the given question
∵ d(x) = x² - 10 x
∵ d represents his altitude in meters after x seconds
→ Compare it with the form above to find a and b
∴ a = and b = -10
∵ h =
→ Substitute the values of a and b in the rule to find h
∴ h = = 10
∴ h = 10
∵ h is the x-coordinate of the lowest point
∴ The time of the lowest altitude is 10 seconds
∴ Rui will reach his lowest altitude after diving for 10 seconds
Hello!
We first have to find the volume of the bigger cylinder
We use the equation
Put in the values you know
This is 6234.49
Now we find the volume of the cut out part
This is 3180.86
We subtract the two values
6234.49 - 3180.86 = 3053.63
The answer is 3053.6
Hope this helps!
Answer:
Step-by-step explanation:
(2,3)