Answer:

and

.
Step-by-step explanation:
The given ellipse has the equation:

This can be rewritten as

We compare this to the general equation of the ellipse:

We have

and

The vertices of this ellipse are at

and

.
Therefore the vertices of this ellipse are at

and

.
The correct choice is A.
Answer:
4
Step-by-step explanation:
h=8
p=4√3
b=?
By using Pythagoras theorem,
b=√h²-p²
=√8²-(4√3)²
=√64-48
=√16
=4
Answer:
Following are the responses to the given question:
Perimeter of polygon:

Step-by-step explanation:
In this question we calculate the perimeter of a polygon which can be defined as follows:
Using formula:

When vertices are:



Answer:
B
Step-by-step explanation:
You should find the solution for this system of equations (The value of x is the first coordinate for the point of intersection, the value of y is the second coordinate for the point of intersection)
X+y=0.3
y=3x+16.7
use 3x+16.7 instead of y in the first equation(do it to get only x in the first equation)
x+3x+16.7=0.3
4x+16.4=0
4x=-16.4
x=-4.1
y=0.3+4.1=4.4
B