The manager of a hardware store is analyzing his monthly profit. In January, the store earned a profit of $4,000. In February, the profit changed by -$450. In
March, the profit changed by +$600 from the previous month. How much profit,
in dollars, did the company make in March?

If the measure of xyz is 81 what is the measure of yz

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?

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'