math
i dont under stand this: i have to replace letters w/ #'s 0-9 do+re=mi; fa+si=la; re+si+la=sol
math
our man Ostap was going hame from kiev. He rod halfway-fifteen times as fast as he goes on foot. The second half he went by ox team. He can walk twice as fast as that. Would he have saved time if he had gone all the way on foot?
math
our man Ostap was going hame from kiev. He rod halfway-fifteen times as fast as he goes on foot. The second half he went by ox team. He can walk twice as fast as that. Would he have saved time if he had gone all the way on foot?
math
so the answer is 48 but how many days was in the year; with leep years
math
how to solve the ineqality for 2/3(7/8-4x)-5/8<3/8
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