5. Which subtraction problem does NOT require zero
pairs to solve using chips?
O A. 8-(-3)
O B.(-1) – 4
OC.(3) -(-6)
OD(-9) - (-5)

30 is 6 multiplied by a number y as a equation

If a(0,0,0) and b(2,2,2) are points in coordinate space, how many paths are there from a to b that move from one lattice point to another in the positive x-,y- or z- direction?

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