Any harry potter fans

An objects motion is described by the equation d= 4sin (pi t) what will the height of the object be at 1.75 seconds?

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¯¯¯¯¯¯¯¯)?

30 ! the graph shows the number of siblings different students have. select from the drop-down menus to correctly complete the statement.