During the afternoon, an 18-foot tall tree casts a shadow 25 feet long. What is the approximate angle of elevation from the end of the shadow to the top of the tree with respect
to the ground?

What is the approximate circumference of the circle shown below?

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

Determine whether the quadrilateral below is a parallelogram. justify/explain your answer (this means back it up! give specific information that supports your decision. writing just "yes" or "no" will result in no credit.)