The Answer #6626 is correct. Excellent, bobbym!
#6627. Name the only World Heritage City in the United States.
Clue : It is the birthplace of the United States Marine Corps, and is also the home of many U.S. firsts, including the first library (1731), first hospital (1751) and medical school (1765), first Capital (1777), first stock exchange (1790), first zoo (1874), and first business school (1881).
#6628. Name the historic nickname for Toronto, Ontario.
The solution #3767 is correct. Neat work, bobbym!
#3768. In each of the following system of equations determine whether the system has a unique solution, no solution or infinitely many solutions.
In case there is a unique solution, find it:
(i) 2x + y = 5,
4x + 2y = 10.
(ii) x - 2y = 8,
5x - 10y = 10.
The Answers, #6619 and #6620, are correct. Excellent, bobbym!
#6621. Name the English physicist, and Nobel Prize in Physics laureate (5 December 1903 - 9 August 1969) for his development of the photographic method of studying nuclear processes and for the resulting discovery of the pion (pi-meson), a subatomic particle.
#6622. Name an an elementary particle similar to the electron, with an electric charge of -1 e and a spin of 1/2, but with a much greater mass. It is classified as a lepton. As is the case with other leptons, it is not believed to have any sub-structure - that is, it is not thought to be composed of any simpler particles.