Which digits repeat in the decimal number 28.1543?
1543
543
3
43

Compare these two waves: the blue and orange waves have the same pitch, but the blue wave is louder. the blue and orange waves have the same volume, but the blue wave has a higher pitch. the orange wave has a higher pitch, but the blue wave is louder. the blue wave has a higher pitch, but the orange wave is louder.

In the diagram, ab is tangent to c, ab = 4 inches, and ad = 2 inches. find the radius of the circle.

In a timed typing test lara typed 63 words per minute. estimate the number of words she should be able to type in half in hour show your work