Given the equation of an ellipse, identify the center point:

4x^2 + 40x + 25y^2 − 100y + 100 = 0.

c.35

step-by-step explanation:

8+13=21

21+8=29

29+6=35

we have three similar triangles, because each has a right angle and shares an angle.   let's write the angles in order: opposite to short leg, long leg, hypotenuse.

cab similar to bad similar to cbd

or as ratios,

ca: ab: cb = ba: ad: bd = cb: bd: cd

we also know

ac = ad + cd

(ad+cd): ab: cb = ba: ad: bd = cb: bd: cd

(ad+cd)/cb=cb/cd

we have cb=6, ad=5 and seek x=cd.

we reject the negative root and conclude x=4

answer: 4

answer: no

step-by-step explanation: because the big angle will spread away the 2 side that it is on and make the opposite side even longer.