There are 420 students in kindergarten through third grade if 1/4 of the students are in first grade 20% are in the second grade and 115 students are in the third grade how many students are in kindergarten explain

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

Astore has apples on sale for three dollars or 2 pounds how many pounds of apples can you buy for nine dollars if an apple is approximately 5 ounces how many apples can you buy for nine dollars

Bring the fraction a/a-4 to a denominator of 16-a^2