The commutative property holds for the __of two matricies but does not hold __ for the of two matricies.

The commutative property holds for the  Addition of two matricies but does not hold  subtraction  for the of two matricies.

Addition and multiplication

Step-by-step explanation:

The commutative property holds good for the addition of two matrices.

Because addition of matrices mean adding the corresponding entries.  Since addition is commutative we have addition of matrices which involve adding the corresponding entries is also commutative

But product of two matrices is not commutative.

Eg: Consider A =

and B =

We get AB =

and BA =

proving AB not equals BA.

if gloria has "carry over" minutes, (that is, any minutes paid for but not used in a month can be applied to her payment for minutes in the next month,) her total usage for the three months is: total minutes = 320 + 243 + 489 = 1052 minutes number of 200 minute blocks = 1052/200 = 5 r52 (that is 5 with a remainder of 52) rounding up the number of 200 minute blocks gives her usage for the three months as 6 blocks. the cost for six blocks is 6 x $25 = $150 she also has 200 - 52 or 148 carry over minutes if gloria pays each month and unused minutes are lost, applying the rounding up procedure to each month gives: first month usage of 320 minutes rounds up to 2 blocks of 200 minutes for a payment of 2 x $25 = $50 second month usage of 243 minutes rounds up to 2 blocks of 200 minutes for a payment of 2 x $25 = $50 third month usage of 489 minutes rounds up to 3 blocks of 200 minutes for a payment of 3 x $25 = $75 total payments for the three months are $50 + $50 + $75 = $175 get the plan with carry over minutes!