Answer:I think A
Step-by-step explanation:
Hopefully I am right
Positive because when I looked at the graph, the scattered plots are increasing up.
Answer:
1. x^3+27y^3
2. 10a^3+17a^2b+11ab^2+12b^3
Step-by-step explanation:
Answer:
the equation of the circle is
Step-by-step explanation:
Recall that the equation of a circle is given by where r is the radius, and (h,k) is the center. Recall that given two points that are the endpoints of a diameter, the center of the circle is their correspondent midpoint. Also, recall that given points (a,b), (c,d) their midpoint is obtained by
In this case we are given the endpoints (-1,-9), (5,1). So the center of the circle is the midpoint obtained by . Recall that the radius of a circle is the distance from the radius to any of the points of the circle. So, the radius is the distance between the center and the point (-1,-9). We will calculate r^2, by using the distance formula. REcall that the distance between points (a,b), (c,d) is given by
. So, its square is
.
In our case,
So, the equation of the circle is