Find the intersection of the two circles x²+y²-2x+4y-11=0 and x²+y²+4x+2y-9=0.

(0.3135, 1.9405) and (-1.9135, -4.7405)

Step-by-step explanation:

Subtracting the equations we get

Putting the y value in the first equation

So, the points of intersection are (0.3135, 1.9405) and (-1.9135, -4.7405)

okay wait before i answer, is this for your points on a graph?

answer: .64

step-by-step explanation

set up the formula for standard deviation for this set of numbers, then simplify