An after school meeting of the math club lasted 1.5 hours, 2/3 of this time was taken up by a discussion on the history of fractions. the remaining time was spent doing on problem solving. how much time did the math club spend on problems?

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 is 0.000008 meters in scientific notation

20 points + brainliest answer + my mom’s chocolate chip cookie ! subtract.