One third of the students in the marching band signed up for the pep band. Then five students changed their mind. If there are 31 students in the pep band, how many students are in the marching band?

How many square feet of out door carpet will we need for this hole? 8ft 3ft 12ft 4ft

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¯¯¯¯¯¯¯¯)?

How do i do this? i don’t understand