A tree is standing next to a 55-foot high building. The tree has a 10-foot shadow while the building has a 22-foot shadow. How tall is the tree?​

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?

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?

Atemperature of 1.64◦f corresponds to answer in units of ◦c.