Find positive numbers a and b so that the change of variables s=ax, t=by transforms the integral ∬Rdxdy into ∬T∣∣∣∂(x, y)∂(s, t)∣∣∣dsdt for the region R, the elliptical region x2/4+y2/16≤1 and the region T, the circle s2+t2=1.

My math teacher told my class to "steal" a 6th grade fraction word problem from the internet, word problems? : -p requirements: only a 1 step word problem. needs to be complex.

Do some research and find a city that has experienced population growth. determine its population on january 1st of a certain year. write an exponential function to represent the city’s population, y, based on the number of years that pass, x after a period of exponential growth. describe the variables and numbers that you used in your equation.

Which statement is true about a number and its additive inverse? a. their product is always one. b. their sum is always one. c. they are always reciprocals of each other. d. their sum is always zero.