Write the following series in sigma notation.
4+10+16+22+28

Plz ! what is the volume of this pyramid? with numbers of 30cm 14cm 18cm

Aline parallel to a triangle's side splits ab into lengths of x - 5 and x + 2. the other side, ac, is split into lengths of x and x + 12. what is the length of ac? a) 12 b) 24 c) 36 d)

The triangles are similar. what is the value of x? show your work.