Find the area of the trapezoid below by decomposing the shape into rectangles and triangles

Which three lengths could be the lengths of the sides of a triangle? 21 cm, 7 cm, 7 cm 9 cm, 15 cm, 22 cm 13 cm, 5 cm, 18 cm 8 cm, 23 cm, 11 cm

Find the pattern and use it to list the nth term in the sequence. 6, 12, 20, 30, 42, 56, the nth term of the sequence is

What are the coordinates of the point that is 1/3 of the way from a to b? a (2,-3) b (2,6)