The diagonals of a quadrilateral bisect each other at right angles. What is the quadrilateral best described as? (a) parallelogram
(b) kite
(c) rhombus
(d) trapezium

please help

What is the distance between the points (2 -3) and (-6 4) on the coordinate plane

The graph represents the gallons of water in a water tank with respect to the number of hours since it was completely filled

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?