The world's population density is highest in which of these countries? india russia japan china portugal united states of america

Quadrilateral abcd is translated up and to the right, and then rotated about point q. which congruency statement is correct?

Which has the greater energy, light of wavelength 519 nm or light with a frequency of 5.42 x 10^8 sec^-1?

Jackson earns $25 per hour as a tutor at the college library. he set a weekly spending budget of $130 each week and puts the remaining money in his savings account. how many hours must he work this week to have at least an extra $50 to put in his savings account