I NEED HELP EXPLAINING HOW I GOT MY ANSWERS ILL GIVE AS MANY POINTS POSSIBLE

If a boat travels 3 miles in 1.5 hours how far will it travel in 1 hour

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)

What effect would doubling all the dimensions of a triangular pyramid have on the volume of the pyramid? explain your reasoning.