I1YBYY
04.03.2020 •
Mathematics
A see-saw is 25 feet long with a fulcrum in the middle of the board. If a 60 lb. child sits three feet from the fulcrum, what is the lowest weight that will lift the child?
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Ответ:
i think for the first question; an oligopoly
for the third i think its; d. people accept it in exchange for goods and services.
im not sure about the 2nd maybe b or d