The point (a,b) shown below represents which complex number?…

The point (a,b) shown below represents which complex number?  A complex number plane is shown with the horizontal axis labeled “Real” and the vertical axis labeled “Imaginary.” The grid is marked from −5 to 5 on both axes. A red point appears in the third quadrant at approximately (−3, −3). The point is labeled “(a, b)” in red text. Its position indicates both the real part and the imaginary part are negative.

Use the triangle shown to solve for . A right triangle is sh…

Use the triangle shown to solve for . A right triangle is shown with a right angle at the bottom left corner. The horizontal base is labeled 16, and the slanted hypotenuse is labeled 20. The interior of the triangle is shaded light blue. The vertical left side forms the right angle with the base, and the lower right portion of the base is labeled x, indicating an unknown segment length. The diagram focuses on the side lengths of the right triangle.