Question Number 123390 by aurpeyz last updated on 25/Nov/20 $${in}\:{gambling}\:{game}\:{a}\:{man}\:{is}\:{paid}\:\$\mathrm{5} \\ $$$${if}\:{he}\:{gets}\:{all}\:{heads}\:{or}\:{all}\:{tails}\:{when} \\ $$$$\mathrm{3}\:{coins}\:{are}\:{tossed}\:{and}\:{he}\:{pays}\:{out} \\ $$$$\$\mathrm{3}\:{if}\:{either}\:\mathrm{1}\:{or}\:\mathrm{2}\:{heads}\:{appears}. \\ $$$${calculate}\:{his}\:{expected}\:{gain} \\ $$ Answered by talminator2856791 last updated…
Question Number 123389 by aurpeyz last updated on 25/Nov/20 $${an}\:{unbiased}\:{coin}\:{is}\:{tossed}\:{three}\:{times}\:{if}\:{a}\:{discrere} \\ $$$${random}\:{variable}\:{X}\:{denoted}\:{the}\: \\ $$$${number}\:{of}\:{times}\:{a}\:{tail}\:{appears}\: \\ $$$$\mathrm{1}.\:{list}\:{the}\:{sample}\:{space} \\ $$$$\mathrm{2}.\:{find}\:{the}\:{distribution}\:{of}\:{X} \\ $$$$\mathrm{3}.\:{the}\:{mean}\:{of}\:{X} \\ $$ Answered by som(math1967)…
Question Number 123385 by help last updated on 25/Nov/20 Answered by Dwaipayan Shikari last updated on 25/Nov/20 $${sin}^{\mathrm{6}} \mathrm{1}°+{cos}^{\mathrm{6}} \mathrm{1}°+{sin}^{\mathrm{6}} \mathrm{2}°+{cos}^{\mathrm{6}} \mathrm{2}°+…+{sin}^{\mathrm{6}} {n}°+{cos}^{\mathrm{6}} {n}° \\…
Question Number 123384 by help last updated on 25/Nov/20 Terms of Service Privacy Policy Contact: info@tinkutara.com
Question Number 188905 by yawa7373 last updated on 08/Mar/23 Commented by mr W last updated on 09/Mar/23 $$\mathrm{3}.\mathrm{5}\:{rotations}\:{in}\:\mathrm{0}.\mathrm{75}\:{s}\:{means} \\ $$$$\frac{\mathrm{3}.\mathrm{5}×\mathrm{360}°}{\mathrm{0}.\mathrm{75}}=\mathrm{1680}°/{s} \\ $$$${or} \\ $$$$\frac{\mathrm{3}.\mathrm{5}×\mathrm{2}\pi}{\mathrm{0}.\mathrm{75}}=\mathrm{29}.\mathrm{32}\:{rad}/{s} \\…
Question Number 188902 by sciencestudentW last updated on 08/Mar/23 $${what}\:{is}\:{the}\:{deference}\:{between}\:{math} \\ $$$${and}\:{mathematics}? \\ $$ Commented by mr W last updated on 09/Mar/23 $${the}\:{same}\:{difference}\:{as}\:{between} \\ $$$${dad}\:{and}\:{father}.…
Question Number 188897 by sciencestudentW last updated on 08/Mar/23 $${find}\:{the}\:{cubic}\:{root}\:{of}\:\mathrm{23456}\:{by} \\ $$$${general}\:{method}! \\ $$ Commented by Frix last updated on 08/Mar/23 $$\mathrm{What}'\mathrm{s}\:\mathrm{the}\:“\mathrm{general}\:\mathrm{method}''? \\ $$ Terms…
Question Number 188895 by sciencestudentW last updated on 08/Mar/23 $${sometimes}\:{when}\:{we}\:{disconnected}\:{the} \\ $$$${current}\:{in}\:{a}\:{circuit}\:{that}\:{the}\:{bulb}\:{is}\:{little} \\ $$$${bright}\:{why}?\:{what}\:{is}\:{the}\:{reason}? \\ $$ Answered by aleks041103 last updated on 09/Mar/23 $${Is}\:{the}\:{bulb}\:{incondecent}\:{or}\:{LED}? \\…
Question Number 123356 by ZiYangLee last updated on 25/Nov/20 $$\mathrm{If}\:{f}\left({x}\right)=\frac{{ax}+\mathrm{1}}{\mathrm{4}{x}−\mathrm{3}}\:,\:{x}\in\mathbb{R}\:,\:{x}\neq\frac{\mathrm{3}}{\mathrm{4}} \\ $$$$\:\:\mathrm{and}\:{ff}\left({x}\right)={x},\:\mathrm{find}\:\mathrm{the}\:\mathrm{values}\:\mathrm{of}\:{a} \\ $$ Answered by liberty last updated on 25/Nov/20 $$\rightarrow\begin{cases}{{f}\left({x}\right)=\frac{{ax}+\mathrm{1}}{\mathrm{4}{x}−\mathrm{3}}}\\{{f}\:^{−\mathrm{1}} \left({x}\right)=\frac{\mathrm{3}{x}+\mathrm{1}}{\mathrm{4}{x}−{a}}}\end{cases} \\ $$$$\Rightarrow\:{f}\left({f}\left({x}\right)\right)={x}\:;\:{f}^{−\mathrm{1}}…
Question Number 123344 by aurpeyz last updated on 25/Nov/20 $$ \\ $$$$\left(\mathrm{2}{xy}^{\mathrm{4}} {e}^{{y}} +\mathrm{2}{xy}^{\mathrm{3}} +{y}\right){dx}+\left({x}^{\mathrm{2}} {y}^{\mathrm{4}} {e}^{\mathrm{4}} −{x}^{\mathrm{2}} {y}^{\mathrm{2}} −\mathrm{3}{x}\right){dy} \\ $$$${Describe}\:{an}\:{exact}\:{equation}\:{and}\:{solve} \\ $$$${the}\:{diffrential}\:{equation}. \\…