Two people, A and B, travel from X to Y along different routes. Their journeys take the same amount of time,
A's route
90 km
B's route
60 km
B travels at an average speed of 40km/h.
What is A's average speed?

Two sides of a triangle mesure 20cm and 30cm. what is the measure of the third side

Afactory makes propeller drive shafts for ships. a quality assurance engineer at the factory needs to estimate the true mean length of the shafts. she randomly selects four drive shafts made at the factory, measures their lengths, and finds their sample mean to be 1000 mm. the lengths are known to follow a normal distribution whose standard deviation is 2 mm. calculate a 95% confidence interval for the true mean length of the shafts. input your answers for the margin of error, lower bound, and upper bound.

Wich statement could be used to explain why the function h(x)= x^3 has an inverse relation that is also a function