High intensity and how many beats per minute classify a workout to be high intensity? What activities do you do that would be considered a high intensity workout?

What is a high intensity workout that you would like to try?

The number of passengers who arrive at the platform of a subway station for the 10 am train is a random variable with a mean of 120 and a variance of 16. find the lower bound of the probability that there will be between 100 and 140 passengers (round off to second decimal place).

If two parallel light rays hit a mirror, they will not be parallel to each other after they reflect.

Matter that emits no light at any wavelength is called