A car travels 195 miles in 3 hours assuming that the distance the car travels write an equation that represent this relationship in the form of d=kt

The number if marbles of different colors stored in a hat is listed below: 4 red marbles 10 green marbles 7 blue marbles. without looking in the hat, dan takes out a marble at random. he replaces the marble and then takes out another marble from the hat. what is the probability that dan takes out a blue marble in both draws?

What is the result of adding the system of equations? 2x+y=4 3x-y=6

Geometry in the diagram, ∠abc is a right angle. ∠dbc = 30°27'40". find the measure of ∠abd.