In the following scenario, identify the parts of the scientific method and explain your reasoning: James wonders if adding salt water will affect how long it takes the water to freeze. He decides to check his hypothesis by conducting an experiment using two ice trays. One with water and one with two tablespoons of salt added. He checks them every 15 minutes. 1- State an hypothesis that James could use. 2- What is the dependent variable and which one is the independent variable

Marcus needs to rewrite f(x) = x2 + 6x + 4 in vertex form.

Look at arnold's attempt to solve the equation for b: 3b = 12 b = 3 · 12 b = 36 describe the mistake that arnold made.

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?