Which operations is the following set closed under? Explain your answer. \(\left\{2,4,6,...\right\}\)

What are the constants in this expression? -10.6+9/10+2/5m-2.4n+3m

What is the solution of sqrt x+2-15=-3

5, 6, 10 question: a. determine whether the side lengths form a triangle. (explain your reasoning) b. if it is a triangle, determine whether it is a right, acute, or obtuse triangle. (show your work)