7. given f : a + b and g: b â c, is it true that if go f is surjective, then f is surjective? prove this or provide a counterexample. [6 marks]

He amount of carbon-14 present in animal bones t years after the animal's death is given by p(t)equals=upper p 0 e superscript negative 0.00012097 tp0e−0.00012097t. how old is an ivory tusk that has lost 26% of its carbon-14?

The vertices of a triangle are a(7,5), b(4,2), c(9,2). what is m

Which of the following can be used to explain a statement in a geometric proof?