A student cycle s to x hour at 12km/hr and y hour at 16km/hr. Altogether the student cycles 16km in 5 hours ,find x and y?

Is a currency whose value is tied to another currency, meaning that the exchange is fixed

Which is the equation of an ellipse with directrices at x = ±4 and foci at (2, 0) and (−2, 0)?

Asquare has a side that measures 11 units. what is the area of a circle with a circumference that equals the perimeter of the square? use 3.14 for π, and round your answer to the nearest hundredth. 1519.76 units2 379.94 units2 616.56 units2 154.14 units2