Aportion of karen's backyard is shaped like a triangle. with a base of 20 yards and a height of 13 yards. how many square yards of sod will she need to cover this section?

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.

Marla bought a book for $12.95, a binder for $3.49, and a backpack for $44.99. the sales tax rate is 6%. find the amount of tax and the total she paid for these items

Plz hurry evaluate the expression a+b where a=8 and b=19