The center of an ellipse is (1,6). One focus of the ellipse is (-3,6). One vertex of the ellipse is (8,6). What is the equation of the ellipse in standard form?
Drag an expression into the boxes to correctly complete the equation.
1
(x-1)²
16
(-6)
33
(x-1)
33
(-6)²
16
(7-6
49
(x-1)
49

Hi!  So, in order to find the mean, we must add all the numbers together, then divide it by how many sets of numbers there are.  So, 39 + 43 + 46 + 86 + 22 + 39 + 75 = 350.  Now, there are 7 sets of numbers.  So, we do 350 / 7.  Which equals B) 50.  Hope this helps! :-)