X/-4 -(-8)=12
16
80
-80
-16

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)

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Students planted 6 equals size gardens on earth day. they divided each garden into three equal sections and planted herbs in 2 of the 3 sections what fraction of the gardens did the students plant with herbs.