Answer:
correct answer is option 3:
Step-by-step explanation:
Given that
Ellipse passes through coordinates:
Points inside ellipse (5, 0) and (-5,0).
Given the options:
Let us try to put the coordinates in the options and check which equation gets satisfied.
Putting x = 0, and trying to find out y in option 1.
But, the points are
So, option (1) is false.
Putting x = 0 to find y in option 2.
y will have imaginary values so ellipse not possible at x = 0.
So, option (2) is false.
Putting x = 0 to find y in option 3.
Putting y = 0 to find y in option 3.
So, the points are satisfied.
Putting (5, 0) and (-5,0) in LHS of option 3:
i.e. both the points are inside ellipse.
Hence correct answer is option 3:
Answer:c
Step-by-step explanation:
1. anything 5 below
2. anything below 9
3.anything below 16
4. anything above 6
Answer:
The cone'll require about 37.5 cm of tubing
Step-by-step explanation:
To do this, we need to know that the volume of the medium will have to be the same volume of the cone that will be printed.
Then, the volume of the cone is:
V = π*r^2*h/3
V = 3.14 * 5^2*8 / 3 = 209.33 cm^3
We can assume that the tubing is a cylinder so:
V = π*r^2*h
The radius is 1 1/3, and this is:
1*3 + 1 = 4/3
Solving for h we have:
h= V/π*r^2
h = 209.33 / 3.14*(4/3)^2
h = 209.33 / 5.58
h = 37.5 cm