If u + t = 5u+t=5u, plus, t, equals, 5 and u -t = 2u−t=2u, minus, t, equals, 2, what is the value of (u -t)(u^2 -t^2)(u−t)(u 2 −t 2 )left parenthesis, u, minus, t, right parenthesis, left parenthesis, u, squared, minus, t, squared, right parenthesis ?

What is the product? (x2+3y+7) [yy+1)

Which term best describes the association between variables a and b? no association a negative linear association a positive linear association a nonlinear association a scatterplot with an x axis labeled, variable a from zero to ten in increments of two and the y axis labeled, variable b from zero to one hundred forty in increments of twenty with fifteen points in a positive trend.

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?