Solve the equation 2×34÷12+2-3×4×5=

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.

The function f(x)= -(x+5)(x+1) is down. what is the range of the function?

Triangles abc and dfg are given. find the lengths of all other sides of these triangles if: b ∠a≅∠d, ab·dg=ac·df, ac=7 cm, bc=15 cm, fg=20 cm, and df-ab=3 cm.