Is anyone good in brainlest and points

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?

Find the slope of the line passing through a pair of points

Which equation can be used to measure the density of water in a spherical water tank? let w represent the number of water particles within the region.