what is mass?

Answer 1

Mass is property of matter than make celeration. It can be converted to energy.

You are asking a physi question, not a math question.

Answer 2

An express bus and a local bus starty out at 1st Street together. The express bus stops every 15 blocks. The local bus stops every 4 blocks. How many blocks will it be before there is a bus stop where both buses stop?

Answer 3

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