Answer:
8,06
Step-by-step explanation:
c = Va^2+b^2 = V4*4+7*7 = v65 = 8,06
Sqrt 80 = 8.94
d = sqrt[(x-x)^2 + (y-y)^2]
d = sqrt [(6-2)^2 + (-9 - - 1)^2]
d = sqrt [(4)^2 + (-8)^2]
d = sqrt (16 + 64)
d = sqrt 80
d = 4 sqrt 5 = 8.94
1 1/5
13.48