There are six houses on philips road that each use, on average, between 1.58 units and 1.71 units of electricity for 2 to 4 hours. john estimates the total usage for all six houses to be approximately 28 units. is this a reasonable estimate?

Sum is 17 and their difference is 3

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?

What is the missing statement in step 4? ? rts ? ? vtu and ? rtu ? ? vts ? rts ? ? rvs and ? rtu ? ? stv ? vrs ? ? vru and ? usr ? ? usv ? vur ? ? vus and ? uvs ? ? sru