Please help and explain your reasoning!

Here is the image:

Thanks!

I’m which figure is point g an orthocenter

Evaluate cos2θ for cosθ = square root of 3/2

Nick has box brads. he uses 4 brads for the first project. nick let’s b represent the original number of brads and finds that for the second project, the number of brads he uses is 8 more than half the difference of b and 4. write an expression to represent the number of brads he uses for the second project.