19.(03.06 LC) Which of the following is true? A. |9-| < 6
B. |-9| < |-6|
C. |-6| < -9
D. |-6| < |-9|

If the speed of an electromagnetic wave is 100,000 cm/s and its wavelength is 100 cm, what is its frequency? a) 100,000 cycles per second (hz) b) 1 × 10-3 cycles per second (hz) c) 10,000,000 cycles per second (hz) d) 1,000 cycles per second (hz)

An octagonal prism has jow many lateral faces?

Heather is riding a quadratic function that represents a parabola that touches but does not cross the x-axis at x=-6