Solve.
12 - (-4) = 0
8
9
17
16
Help me pls

Solve this and show you’re work step by step ! -5 3/4+3h< 9 1/4 -

Astick 2 m long is placed vertically at point b. the top of the stick is in line with the top of a tree as seen from point a, which is 3 m from the stick and 30 m from the tree. how tall is the tree?

Two years ago a man was six times as old as his daughter. in 18 years he will be twice as old as his daughter. determine their present ages.