jasminalmor jasminalmor

26-01-2021
Mathematics

contestada

coordinates of C is (5,x) the coordinates of D is (6,9) and the coordinates of midpoint M of cd (-1,7) find X

Respuesta :

evgeniylevi evgeniylevi

26-01-2021

Answer:

5

Step-by-step explanation:

1. the formula of the midpoint is:

[tex]X_M=\frac{X_C+X_D}{2}; \ Y_M=\frac{Y_C+Y_D}{2}.[/tex]

2. using the formula of coordinate 'y':

[tex]7=\frac{x+9}{2}; \ x=5.[/tex]

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