What is the diameter of a circle whose radius is 6.45 meters

What two criteria are needed for triangles to be similar

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

Put the equation in slope intercept form by solving for y