A passenger train travels from Boston to New York, a distance of 350 km, in 3.5 hours. What is the train's speed?

speed = 100km/hr

Step-by-step explanation:

speed = distance / time

distance = 350 km

time = 3.5 hours

Therefore :

speed = 350/3.5

speed = 100km/hr

32

step-by-step explanation:

step-by-step explanation:

assume that you have 3 different side lengths.   apply the pythagorean theorem here:   square each of the two shortest sides; call them a and b, so that their squares are a² and b².   also square the longest side, calling the result c².

now, if a² + b² = c² is true, the triangle is a right triangle; otherwise it is not a right triangle.