The u. s department of agriculture (usda) recommends that no more than 3/10 of your calories come from fat. in a bowl of tasty crunch cereal, 15 out of 120 calories are from fat. is this within the usda recommendation ? explain

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?

Which is the focus of a parabola with equation y2=4x

In the equation sqrt(n+5)-sqrt(11-10)=1. what is the value of n