Mary roller skates with a constant speed of 12 km/h. How long will she take to travel a distance of 18 kilometers?

(05.08a)triangle abc is transformed to similar triangle a′b′c′ below: a coordinate plane is shown. triangle abc has vertices a at 2 comma 6, b at 2 comma 4, and c at 4 comma 4. triangle a prime b prime c prime has vertices a prime at 1 comma 3, b prime at 1 comma 2, and c prime at 2 comma 2. what is the scale factor of dilation? 1 over 2 1 over 3 1 over 4 1 over 5

If you could answer these your a life saver

What is the length of the midsegment of a trapezoid with bases of length 15 and 25 ?