If p varies directly with q, and p = 10 when q = 5, what is the value of p when q = 20

In triangle abc, the length of side ab is 12 cm, the length of side bc is 5 cm, and the length of side ca is 9 cm. find the measure of angle a using the law of cosines.

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

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.