In a survey, 250 out of 1000 people said that they preferred a particular brand of shampoo. what is the result of the survey in percent?

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)

If i have one apple and give you the apple, how many apples do i have?

What does x = in this equation x+3+2x=x+5