Question

4,5) is the midpoint between (1,2) and D.Then the coordinates of D are_______

Answer 1

Answer:

Please refer to the Attachment!!!

Hope it Helps!!!

Please mark as Brainliest!!!

Answer 2

Answer:

The coordinates of D (7, 8)

Given problem:

(4,5) is the midpoint between (1,2) and D.Then the coordinates of D are_______

Step-by-step explanation:

Given that distance mid point of (1, 2) and D = (4,5)

Let D(a, b) be the required point

we know thatmid point of any two points = $(\frac{x_{1}+x_{2} }{2} , \frac{y_{1}+y_{2} }{2} )$

then the mid point of (1, 2) D(a, b) = $(\frac{1+a}{2} , \frac{2+b}{2} )$

from given data $(\frac{1+a}{2} , \frac{2+b}{2} ) = (4, 5)$  

       ⇒ $\frac{1+a}{2} = 4$                        ⇒ $\frac{2+b}{2} = 5$

          1+a = 8                              2+b = 10

             a = 7                                   b = 8

the required point  D is (7, 8)