20)r + 27 = 6* O r = 33 O r = --21 O p =--33 O r = 21​

For which intervals is the function positive? select each correct answer. [-6, -4) (6, 8] (-4, 0) (0, 6)

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

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers