Please answer the questions need help

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

Solve for n? [tex]z = \frac{3}{4} mn[/tex]

Beth divided 9 ounces of her granola recipe into 4 equal-sized amounts. she placed the amounts into individual bowls. the fraction 9/4 represents the number of ounces of granola in each bowl. which other number represents the amount of granola beth has in each bowl? (a) 1 1/4 (b) 2 1/4 (c) 1 3/4 (d) 3 3/4 i need !