Please hurry The table shows the word’s largest countries by approximate land mass. By what factor must you multiply the land mass of Brazil to get the land mass of Russia? Round your answer to the nearest whole number. A. 1 B. 2 C. 3 D. 4

1- is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis. 2- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis. 3- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in part b?

Polygon abcde is reflected to produce polygon a′b′c′d′e′. what is the equation for the line of reflection?

y=2x−1 5x−4y=1 is (1,1)(1,1) a solution of the system?