Question Number 51109 by peter frank last updated on 24/Dec/18 Commented by peter frank last updated on 24/Dec/18 $${wish}\:{upcoming}\:{christmas}\:{in} \\ $$$${by}\:{sharing}\:{in}\:{mathematics}\: \\ $$ Terms of…
Question Number 182176 by peter frank last updated on 05/Dec/22 Answered by MikeH last updated on 05/Dec/22 $$\mathrm{let}\:\overset{\rightarrow} {\mathrm{w}}\:=\:{x}\mathrm{i}\:+\:\mathrm{6j}\:+\:{y}\:\mathrm{k} \\ $$$$\mathrm{orthogonal}\:\mathrm{to}\:\overset{\rightarrow} {\mathrm{u}}\:\mathrm{and}\:\overset{\rightarrow} {\mathrm{v}}\:\Rightarrow\:\overset{\rightarrow} {\mathrm{w}}\:=\:\overset{\rightarrow} {\mathrm{u}}×\:\overset{\rightarrow}…
Question Number 116633 by zakirullah last updated on 05/Oct/20 Answered by Olaf last updated on 05/Oct/20 $$\mathrm{If}\:\mathrm{B}\:\mathrm{is}\:\mathrm{a}\:\mathrm{inverse}\:\mathrm{matrix}\:\mathrm{of}\:\mathrm{A} \\ $$$$\mathrm{then}\:\mathrm{B}.\mathrm{A}\:=\:\mathrm{A}.\mathrm{B}\:=\:\mathrm{I}\:\left(\mathrm{1}\right) \\ $$$$ \\ $$$$\mathrm{If}\:\mathrm{C}\:\mathrm{is}\:\mathrm{another}\:\mathrm{inverse}\:\mathrm{matrix}\:\mathrm{of}\:\mathrm{A} \\ $$$$\mathrm{then}\:\mathrm{C}.\mathrm{A}\:=\:\mathrm{A}.\mathrm{C}\:=\:\mathrm{I}\:\left(\mathrm{2}\right)…
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Question Number 182131 by Agnibhoo98 last updated on 04/Dec/22 $$\mathrm{Solve} \\ $$$$\frac{{x}\:+\:{a}^{\mathrm{2}} \:+\:\mathrm{2}{c}^{\mathrm{2}} }{{b}\:+\:{c}}\:+\:\frac{{x}\:+\:{b}^{\mathrm{2}} \:+\:\mathrm{2}{a}^{\mathrm{2}} }{{c}\:+\:{a}}\:+\:\frac{{x}\:+\:{c}^{\mathrm{2}} \:+\:\mathrm{2}{b}^{\mathrm{2}} }{{a}\:+\:{b}}\:=\:\mathrm{0} \\ $$ Answered by manxsol last updated…
Question Number 182108 by Tawa11 last updated on 04/Dec/22 A truck, P traveling at 54km/hr passes through a point at 10:30am, while another truck, Q…
Question Number 182114 by Maisam last updated on 04/Dec/22 Commented by Maisam last updated on 04/Dec/22 $${please}\:\:{help} \\ $$$$ \\ $$ Terms of Service Privacy…
Question Number 182093 by Fridunatjan08 last updated on 04/Dec/22 $${Solve}\:{the}\:{equation}: \\ $$$$\frac{{x}−\mathrm{6}}{\mathrm{2020}}+\frac{{x}−\mathrm{5}}{\mathrm{2021}}+\frac{{x}−\mathrm{4}}{\mathrm{2022}}=\mathrm{3} \\ $$ Commented by Fridunatjan08 last updated on 04/Dec/22 $${Please}\:{show}\:{me}\:{the}\:{easy}\:{way}\:{to}\:{solve}\:{this}\:{equation} \\ $$ Commented…
Question Number 182073 by Acem last updated on 04/Dec/22 $${Find}\:{the}\:{sum}\:{of}\:{the}\:{solutions}\:{of}\:{the}\:{equation}: \\ $$$$\:\mid\sqrt{{x}}\:−\:\mathrm{2}\mid+\:\sqrt{{x}}\:\left(\sqrt{{x}}\:−\:\mathrm{4}\right)+\:\mathrm{2}=\:\mathrm{0}\:\:\:;\:{x}>\:\mathrm{0} \\ $$ Answered by HeferH last updated on 04/Dec/22 $$\:\mid\sqrt{{x}}\:−\:\mathrm{2}\mid\:=\:\mathrm{4}\sqrt{{x}}\:−\:{x}\:−\:\mathrm{2} \\ $$$$\:\:\sqrt{{x}}\:−\:\mathrm{2}\:=\:\pm\:\left(\mathrm{4}\sqrt{{x}}\:−\:{x}\:−\:\mathrm{2}\right) \\…
Question Number 182074 by Acem last updated on 04/Dec/22 $${Let}\:{x}+\:{xy}+\:{y}=\:\mathrm{54}\:\:\:;\:{x},\:{y}\in\:\mathbb{N}\:,\:{Find}\:{x}+\:{y} \\ $$ Answered by HeferH last updated on 04/Dec/22 $${x}\:+\:{xy}\:+\:{y}\:=\:\mathrm{54} \\ $$$$\:{x}\left(\mathrm{1}\:+\:{y}\right)\:+\:{y}\:=\:\mathrm{54} \\ $$$$\:{x}\left(\mathrm{1}\:+\:{y}\right)\:+\:\left(\mathrm{1}\:+\:{y}\right)\centerdot\mathrm{1}\:=\:\mathrm{55} \\…