What is the next fraction in the sequence? 1/3, -2/9, 4/27, -8/81

The triangles are similar. what is the value of x? x=

The graph shows the distance y, in inches, a pendulum moves to the right (positive displacement) and to the left (negative displacement), for a given number of seconds x. how many seconds are required for the pendulum to move from its resting position and return? enter your answer in the box.

What is the solution set of the quadratic inequality x^2-5< or equal to 0