HELP PLSSSS I DONT UNDERSTAND WALLAH

Answer:
7.2
Step-by-step explanation:
Distance between (4, 3) and (8, 9):
[tex] d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2} [/tex]
[tex] d = \sqrt{(8 - 4)^2 + (9 - 3)^2} [/tex]
[tex] d = \sqrt{(4)^2 + (6)^2} [/tex]
[tex] d = \sqrt{16 + 36} [/tex]
[tex] d = \sqrt{52} = 7.2 [/tex] (nearest tenth)