15% of the apples in a crate are rotten. there are 12 rotten apples in the crate.
how many apples are in the crate?

Place the following steps in order to complete the square and solve the quadratic equation,

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?

12 out of 30 people chose their favourite colour as blue caculate the angle you would use for blue on a pie chart