Aiko stands 5 m from a tree. at that distance, the angle of elevation from the ground to the top of the tree is 80°. approximately how tall is the tree?

This is the concept of trigonometry, the height of the tree will be given by:
tan theta=[opposite]/[adjacent]
theta=80
height=h
adjacent=5 m
hence;
tan80=h/5
hence;
h=5tan80
h=28.36 m

7p=14 so then you would divide by p=2

7days is 168 hours in decimal form it is just 168 there is no decimal form for this because it is like 168.0 and there is no number you are dividing it by for it to be a decimal.hope this