Please help me .. A surfer is riding a 7-foot wave. The angle of depression from the surfer to the shoreline is 10° .What is the distance from the surfer to the shoreline? draw a picture.

Need ! give step by step solutions on how to solve number one \frac{9-2\sqrt{3} }{12+\sqrt{3} } number two x+4=\sqrt{13x-20} number three (domain and range) f(x)=2\sqrt[3]{x} +1

Galen sold tickets of his church’s carnival for a total of $2,820. children’s tickets cost $3 each and adult tickets cost $5 each. the number of children’s tickets sold was 30 more than 3 times the number of adult tickets slod. how many children’s ticket and how many adult tickets did he sell?

Asystem of equations has 1 solution.if 4x-y=5 is one of the equations , which could be the other equation ?