What is the length of a diagonal of a cube with a side length of 3cm?

Acarnival sold tickets for $1.50 for adults and $1.00 for students. there were 54 tickets sold for a total of $70.50. write a system of equations to represent the number of adult tickets,x, and the number of student tickets,y. find the solution and explain what it means. i'll you if you me

What is sin 7x/4 ? i need on this urgent trig

The graph shown is the graph of which function?