David bought a bag of candy that contains 300 pieces. He wants to split the bag among his 21 students. How many pieces of candy will each student receive? How many extra pieces of candy will David have for himself?

Volume of a cylinder with a radius of 13 in and height of 30 in

Arley is building a model of a city map. in one part of the city, three roads form a right triangle, which harley draws as triangle abc, with the following measures: m∠b=90° and m∠a=30°. in his scale model, the hypotenuse of triangle abc, ac¯¯¯¯¯¯¯¯, has a length of 817−−√ cm. what is the value of a (the length of bc¯¯¯¯¯¯¯¯)?

Measures of the angle of r, 31 s (x+4) t (3x+9)