Amarina 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). the boats are units apart. a: 5.1 b: 7.2 c: 8.1 d: 8.2

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.

Upon substituting our given values in distance formula we will get,

Therefore, the boats are 7.2 units apart and option B is the correct choice.  

answer: it is 1: 47 pm

add all the numbers and check the ones place.

the answer is 486. as the ones place is more than 4, the estimation will be the next 10 ie, 490