Expand each of the following expressions:
(a + 1)(a - 9)

What is the area of triangle pqr on the grid? a triangle pqr is shown on a grid. the vertex p is on ordered pair 7 and 6, vertex q is on ordered pair 1 and 6, and the vertex r is on ordered pair 4 and 2. 5 square units 6 square units 10 square units 12 square units

Find the value of tan theta if sin theta = 12/13 and theta is in quadrant 2

Plot the points (0,6), (3,15.8), and (9.5,0) using the graphing tool, and find the function