6x9 envelopes can be bought from a number of places. Local stationary stores, office supply stores and sometimes dollar stores may carry these envelopes.
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There are several places one can buy A2 envelopes. Online retailers include Paper Source and Desktop Supplies. Retailers that offer both online and in store purchase options include Office Depot and Office Max.
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You use PEMDAS, which is Parenthesis, Exponet, Divide, Multiply, Add, Subtract. You have to do it in that order.So 6x9+6x0.5 is a problem you have to use PEMDAS for.P&E go togehter, so when there is only parentesis or exponets, and no other symbols, then you do the problem across - left to right. Same with D&M, and A&S.In the problem 6x9+6x0.5, M (multiply) is the first symbol. So, 6x9 is 54, and 6x0.5 is 3. Then, A (add) comes next, and then no more symbols. So just add 54 to 3 and you get 57.The answer to 6x9+6x0.5 is 57, AKA - 6x9+6x0.5=57
If I showed you two envelopes on the table, one containing $1 and the other containing $19,and offered you your choice of envelopes, which one would you prefer to have ?Why ?Does it have anything to do with the relative VALUE of the envelopes ?