Two angles are supplementary if the sum of their measures is 180 degrees. if one angles measure is 90 degrees more than twice the measure of the other angle, what are the measures of the angles?

The product of two negative rational numbers is always zero sometimes zero never zero

There is a spinner with 14 equal areas, numbered 1 through 14. if the spinner is spun one time, what is the probability that the result is a multiple of 2 or a multiple of 5?

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)