What is sin 7pie/4
the answer does not have pie in it
and it is not a decimal

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.

Find the difference (8ab+a+2) - (3ab+6)

In an improper fraction, is the numerator equal to, less than, or greater than the denominator