Mathematics: Is 1.4949949994.. a rational number

Is 1.4949949994.. a rational number - id149499499944669844, victoria6929

jordendoctorwho

07.06.2020

The length of CD is 8.5 units

Step-by-step explanation:

Given the graph in which 3 line segments are drawn.

we have to find the length of CD.

Coordinates of C = (-2, 2)

Coordinates of D = (4, -4)

By distance formula,

$\text{The distance between the two coordinate points }(x_1,y_1)\text{ and }(x_2, y_2)\text{ is }$

$D=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

$CD=\sqrt{(4-(-2))^2+(-4-2)^2}$

$CD=\sqrt{36+36}=\sqrt{72}$

$CD=6\sqrt2 units\sim 8.48units$

The length of CD is 8.5 units

0,0(0 оценок)