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Author: Tinku Tara

A-two-digit-number-is-such-that-the-sum-of-its-digits-is-10-When-the-digits-are-reversed-the-new-number-is-28-less-than-twice-the-original-number-Find-the-original-number-

Question Number 217535 by ArshadS last updated on 15/Mar/25 $$\mathrm{A}\:\mathrm{two}-\mathrm{digit}\:\mathrm{number}\:\mathrm{is}\:\mathrm{such}\:\mathrm{that} \\ $$$$\:\mathrm{the}\:\mathrm{sum}\:\mathrm{of}\:\mathrm{its}\:\mathrm{digits}\:\mathrm{is}\:\mathrm{10}.\:\mathrm{When} \\ $$$$\mathrm{the}\:\mathrm{digits}\:\mathrm{are}\:\mathrm{reversed},\:\mathrm{the}\:\mathrm{new}\:\mathrm{number} \\ $$$$\:\mathrm{is}\:\mathrm{28}\:\mathrm{less}\:\mathrm{than}\:\mathrm{twice}\:\mathrm{the}\:\:\mathrm{original}\:\mathrm{number}. \\ $$$$\:\mathrm{Find}\:\mathrm{the}\:\mathrm{original}\:\mathrm{number}. \\ $$ Answered by aleks041103 last updated…

f-R-R-f-f-x-x-2-x-1-f-0-

Question Number 217541 by hardmath last updated on 15/Mar/25 $$\mathrm{f}\::\:\mathbb{R}\:\rightarrow\:\mathbb{R} \\ $$$$\mathrm{f}\left(\mathrm{f}\left(\mathrm{x}\right)\right)\:=\:\mathrm{x}^{\mathrm{2}} \:−\:\mathrm{x}\:+\:\mathrm{1} \\ $$$$\mathrm{f}\left(\mathrm{0}\right)\:=\:? \\ $$ Answered by mr W last updated on 16/Mar/25…

Question-217521

Question Number 217521 by Tawa11 last updated on 15/Mar/25 Commented by mahdipoor last updated on 16/Mar/25 $$\Sigma{F}=\mathrm{0}\:\Rightarrow \\ $$$$\begin{cases}{\left[{A}_{{x}} −{Tcos}\mathrm{20}=\mathrm{0}\right]×{g}}\\{\left[{A}_{{y}} −{Tsin}\mathrm{20}−{m}=\mathrm{0}\right]×{g}}\end{cases} \\ $$$$\Sigma{M}_{{A}} =\mathrm{0}\:\: \\…