Question

If the midpoint between (x, 6) and (-9, 14) is (8, 10), find the value of x.

Answer 1

the midpoint between two points (x1,y1) and (x2,y2) is

Answer 2

\[(\frac{x_1+ x_2}{2},\frac{y_1+ y_2}{2})\]

Answer 3

If the midpoint is at 8, and the end points are at x and -9, then

(x +(-9))/2 = 8

x - 9 = 16

x = 25.

For the second, if L is the midpoint, then seqments CL and LD are congruent.

1/3x + 8 = 2/3x +(-4)

12 = 1/3 x

x = 36 So each segment is 20 and CD is 40.

source: http://answers.yahoo.com/question/index?qid=20101101091658AApT457

Answer 4

Thanks again @Eric_Playsinacoolway

Answer 5

np!