The laziest comment gets brainliest

Step-by-step explanation:

hgj+kk hgffddd

The answer would be 2.6. I had just learned this in math class and its super easy I get all the questions right in math so 2.6 would be the correct answer and I even did the math for you just in case you need to show work.

Step-by-step explanation:

( 4 , -7 )  and  ( -1 , 5 )

d = ( -1 - 4)^2 + (5 - ( -7)^2

-1 - 4 = -5        5 - (-7) = 12

-5 + 12 = 7

the square root of 7 = 2.6