If triangle abc has sides of lengths 6,10,and x, between which two numbers must the value of x lie

Atriangle with all sides of equal length is a/an triangle. a. right b. scalene c. equilateral d. isosceles

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)

Which of the following is the maximum value of the equation y=-x^2+2x+5 a. 5 b. 6 c. 2. d. 1