Answer:
B
Step-by-step explanation:
In the first two coordinates, they share an x-value: 5
The angle does not matter. Think of it as finding the other side to a triangle. Use

a=39 (line AB)
b=b (the leg we need to find)
c=89 (line BD)


(subtract the 1521 from both sides)

(square root both sides)

b = 80
AD=80
441ft² (i believe this is the answer, idk though, i might be wrong sorry)
Eli traveled a total of 8.6 miles. He went to the library and back. 3.75 + 3.75. and he also added and extra 1 1/10 mile. so, 3.75 x 2 = 7.5, 7.5 + 1 1/10 = 8.6. Hope that helped!
Answer:
Boundedness requires that there is only a bounded number of different kinds of parts
Step-by-step explanation: