Respuesta :
Answer:
B: 7.2
Step be step explanation:
We are told that a marina is in the shape of a coordinate grid. Boat A is docked at (3.1, −1) and Boat B is docked at (−4.1, −1).
To find difference of units between two boats we will use distance formula.
[tex]D=\sqrt{(x_2-x_1)^{2}+(y_2-y_1)^{2}}[/tex]
Upon substituting our given values in distance formula we will get,
[tex]D=\sqrt{(3.1--4.1)^{2}+(-1--1)^{2}}[/tex]
[tex]D=\sqrt{(3.1+4.1)^{2}+(-1+1)^{2}}[/tex]
[tex]D=\sqrt{(7.2)^{2}+(0)^{2}}[/tex]
[tex]D=\sqrt{(7.2)^{2}}[/tex]
[tex]D=7.2[/tex]
Therefore, the boats are 7.2 units apart and option B is the correct choice.
