In a change jar, tom has nickels and dimes. the number of nickels is two times the number of dimes and the total amount of money in the jar is $1.20. how many dimes are in the jar? a) 6 b)12 c)10 d)24

1- 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.2- 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 the first question?

Whats are the trickiest steps to do when adding or subtracting rational expressions? how does knowledge of rational numbers u in adding and subtracting rational expressions?

Collin did the work to see if 10 is a solution to the equation r/4=2.4