A certain forest covers an area of 1900km^2. Suppose that each year this area decreases by 7.75%. What will the area be after 14 years?

Using the quadratic formula find the zeros of the given polynomial -5x^2+3x-11

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers

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?