Two vehicles, a car and a truck, leave an intersection at the same time. the car heads east at an average speed of 20 miles per hour, while the truck heads south at an average speed of 50 miles per hour. find an expression for their distance apart d (in miles) at the end of t hours.

Explanation:

Given:

't' hour be the time taken for travel by  both the vehicles and 'd'  be the distance between then

then

Distance traveled by the car = 20 × t miles

and

Distance traveled by the truck  = 50 × t miles

now, using the Pythagoras theorem

or

or

or

thus, the equation relating the distance 'd' with the time 't' comes as

c.is a substance that requires a small amount of energy per gram to raise its temperature; has strong cohesive forces between molecules.

explanation:

a colorless, transparent, odorless liquid that forms the seas, lakes, rivers, and rain and is the basis of the fluids of living organisms.

this could be newton#'s law of cooling. the cooling curve is exponential