Question

If the midpoint between (x, 7) and (10, 11) is (15, 9), find the value of x.

Answer 1

will i have to use a square root?

Answer 2

midpoint = \(\large (\frac{x_1+x_2}{2}, \frac{y_1+y_2}{2}) \)

Answer 3

no, this is simpler than that...

(x, 7) and (10, 11)
x1 y1 x2 y2

Answer 4

x coordinate if midpoint : \(\large \frac{x+10}{2} = 15 \)

Answer 5

you can solve x

Answer 6

??

Answer 7

umm i dont know how the 15 is there

Answer 8

15 is the midpoint's x-coordinate.
we're given that...

Answer 9

\(\large \frac{x+10}{2} = 15\)

multiply 2 both sides

\(\large x+10 = 30\)

Answer 10

rest il leave it to you :)

Answer 11

30-10=20

Answer 12

thats right !

Answer 13

20/2=10 and then thats my coordinate or no?

Answer 14

x = 20 is ur answer

Answer 15

okay thankss lovee bugg!

Answer 16

np :))