Will give brainlest

jamaal is traveling 20 miles an hour slower than micah. micah is traveling n miles an hour. write an expression to describe how fast jamaal is traveling. a) 20n b) n + 20 c) 20 - n d) n - 20

How many zeros does the function f(x)=4x3-x2+1 have

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?

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