Heat is escaping at a constant rate is constant through the walls of a long cylindrical pipe? find the temperature t at a distance r from the axis of the cylinder if the inside wall has radius r = 1 and temperature t = 100 and the outside wall has r = 2 and t = 0

Tickets to an orchestra concert cost $25.50 apiece plus a & 2.50 handling fee for each order. if jamal spent $79 how many ticket did he purchase

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?

Im literally having a mental breakdown