Mark simplified three over five ÷ five over eight; his work is shown below. Identify where he made his error. (5 points) Original division problem: three over five ÷ five over eight Step 1: three over five multiplied by eight over five Step 2:three times eight over five times five Step 3:twenty-four over five Step 4:four and four over five

The transitive property of equality states that: o if a = b, then bra o if a = b, then ac = bc o if a = b and b= c, then a = if a = b and c= c, then a + b = b + c

What is the value of the expression 9+n/3-6 when n = 12? 1. 5. 7. 12.

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?