Write the ratio as a fraction in lowest terms. 21 to 7one half

The random variable x is the number of occurrences of an event over an interval of ten minutes. it can be assumed that the probability of an occurrence is the same in any two-time periods of an equal length. it is known that the mean number of occurrences in ten minutes is 5.3. the appropriate probability distribution for the random variable

In what organelle does photosynthesis take place?

An ant travels at a constant rate of 30cm every 2 minutes.at what speed does the ant travel per minute