Evaluate: 19 - 3k] = 3

How to use order of operation in 20 divide by 4 multiply 5 = 1

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?

Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?