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OpenStudy (anonymous):
81t^2-100=-99
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OpenStudy (anonymous):
You have to find t??
OpenStudy (anonymous):
solve by finding the nearest sq rts. express irrational solutions as decimals rounded to the nearest tenth
OpenStudy (nenadmatematika):
81t^2=1 t^2=1/81 t=+-1/9
OpenStudy (nenadmatematika):
just turn this fraction into decimal number....
OpenStudy (anonymous):
i dont get what you did in that first awnser???
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OpenStudy (lgbasallote):
81 t^2 = 100-99
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