Hope is creating sand art. She is using a pyramid-shaped mold. The base of the mold is shaped like a square and has a side length of 8 inches. The height of the mold is 8 inches. What is the volume of sand that the mold will hold? Round your answer to the nearest tenth of a cubic inch.(1 point) 512 in3 85.3 in3 256 in3 170.7 in3

1- 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.2- 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 the first question?

Atrain leaves little? rock, arkansas, and travels north at 90 kilometers per hour. another train leaves at the same time and travels south at 80 kilometers per hour. how long will it take before they are 680 kilometers? apart?

What is the value of x in the equation7x+2y=48 when y=3