Let U be a square matrix with orthonormal columns. Explain why U is invertible. (Mention the theorems used.)

Write the function for the graph. (1.8) (0,4)

Let f(x) = 5/x and g(x)=2x2+5x. what two numbers are not in the domain of f o g

The image of abc is a'b'c. what transformations would result in this image? abc is reflected over the line x = 1, then is rotated -90° around the origin. abc is reflected over the line y = x - 1, then t: (x, y) → (x - 1, y - 1). abc is rotated 90° around the origin, then is reflected over the y-axis. abc is rotated -90° around the origin, then is reflected over the line y = -1.