What is the length of the radius of a circle with diameter AB: A(5, 4) and B(-1, -4)? * A. 10 B. square root 10 C. 5 D. square root 5

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. how many hours after the truck's departure will the two meet?

Which of the following is not a subset of {1,2,3}?

Find an bif a = {3, 6, 9, 12) and b = {2, 4, 6, 8, 10).