Which of the following best describes the work of descartes? he proved through calculus the existence of a heliocentric universe. he confirmed christian teachings that the heavens are fixed and unmoving. he proposed that through the use of reason and doubt individuals may arrive at understanding. he demonstrated through observation of the night sky that planets orbit the sun.

Who was the first president of the united states (just trying to y’all get points)

Which of the following quotes from the constitution describes the senate? "no person…who shall not have attained to the age of twenty five years, and been seven years a citizen of the united states, and who shall not, when elected, be an inhabitant of that state in which he shall be chosen." "the…shall chose their other officers, and also a president pro tempore, in the absence of the vice president, or when he shall exercise the office of president of the united states.""the…shall be composed of members chosen every second year by the people of the several states.""the…shall choose their speaker and other officers; and shall have the sole power of impeachment."

Which were the most important issues during the presidential election of 2008? a.economic downturn and environmental protection b.two overseas wars and economic downturn c.two overseas wars and campaign spending d.environmental protection and campaign spending