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The-sides-of-a-hexagon-are-enlarged-by-three-times-Find-the-ratio-of-the-areas-of-the-new-and-old-hexagon-

Question Number 63016 by TB last updated on 27/Jun/19 $$\mathrm{The}\:\mathrm{sides}\:\mathrm{of}\:\mathrm{a}\:\mathrm{hexagon}\:\mathrm{are}\:\mathrm{enlarged}\:\mathrm{by}\: \\ $$$$\mathrm{three}\:\mathrm{times}.\:\mathrm{Find}\:\mathrm{the}\:\mathrm{ratio}\:\mathrm{of}\:\mathrm{the}\:\mathrm{areas} \\ $$$$\mathrm{of}\:\mathrm{the}\:\mathrm{new}\:\mathrm{and}\:\mathrm{old}\:\mathrm{hexagon} \\ $$ Answered by MJS last updated on 28/Jun/19 $$\mathrm{no}\:\mathrm{matter}\:\mathrm{which}\:\mathrm{shape}\:\mathrm{you}\:\mathrm{enlarge} \\…

If-tan-2-tan-1-then-

Question Number 62983 by hovea cw last updated on 27/Jun/19 $$\mathrm{If}\:\:\:\mathrm{tan}\:\mathrm{2}\theta\:\mathrm{tan}\:\theta\:=\:\mathrm{1},\:\mathrm{then}\:\theta\:= \\ $$ Answered by Hope last updated on 27/Jun/19 $${tan}\mathrm{2}\theta={cot}\theta={tan}\left(\frac{\pi}{\mathrm{2}}−\theta\right) \\ $$$${formula} \\ $$$$\left[{tan}\alpha={tan}\beta\:\:\:\alpha={n}\pi+\beta\right]…

The-number-of-real-solutions-of-the-equation-9-10-x-3-x-x-2-is-

Question Number 62612 by hovea cw last updated on 23/Jun/19 $$\mathrm{The}\:\mathrm{number}\:\mathrm{of}\:\mathrm{real}\:\mathrm{solutions}\:\mathrm{of}\:\mathrm{the} \\ $$$$\mathrm{equation}\:\left(\frac{\mathrm{9}}{\mathrm{10}}\right)^{{x}} =\:−\mathrm{3}+{x}−{x}^{\mathrm{2}} \:\:\:\:\:\mathrm{is} \\ $$ Answered by tanmay last updated on 23/Jun/19 $$−\mathrm{3}+{x}−{x}^{\mathrm{2}}…

Find-the-value-of-x-in-1-x-1-1-x-2-3-x-3-

Question Number 62610 by hovea cw last updated on 23/Jun/19 $$\mathrm{Find}\:\mathrm{the}\:\mathrm{value}\:\mathrm{of}\:{x}\:\mathrm{in} \\ $$$$\frac{\mathrm{1}}{{x}−\mathrm{1}}\:+\:\frac{\mathrm{1}}{{x}−\mathrm{2}}\:=\:\frac{\mathrm{3}}{{x}−\mathrm{3}}\:\:. \\ $$ Commented by mathmax by abdo last updated on 24/Jun/19 $${the}\:{set}\:{of}\:{definition}\:{for}\:{this}\:\left({e}\right)\:{is}\:{D}\:={R}−\left\{\mathrm{1},\mathrm{2},\mathrm{3}\right\}…

If-and-are-the-roots-of-x-2-a-1-x-1-2-a-2-a-1-0-then-2-2-

Question Number 62611 by hovea cw last updated on 23/Jun/19 $$\mathrm{If}\:\alpha\:\mathrm{and}\:\beta\:\mathrm{are}\:\mathrm{the}\:\mathrm{roots}\:\mathrm{of} \\ $$$${x}^{\mathrm{2}} −\left({a}+\mathrm{1}\right){x}+\frac{\mathrm{1}}{\mathrm{2}}\left({a}^{\mathrm{2}} +{a}+\mathrm{1}\right)=\mathrm{0}\:\mathrm{then} \\ $$$$\alpha^{\mathrm{2}} +\beta^{\mathrm{2}} =\_\_\_\_\_. \\ $$ Commented by Prithwish sen…

If-5-x-4-y-4-and-2-x-4-y-10-then-find-x-and-y-

Question Number 62609 by hovea cw last updated on 23/Jun/19 $$\mathrm{If}\:\:\mathrm{5}\mid{x}\mid\:+\:\mathrm{4}\mid{y}\mid\:=\:\mathrm{4}\:\mathrm{and}\:\mathrm{2}\mid{x}\mid\:−\:\mathrm{4}\mid{y}\mid\:=\:\mathrm{10}, \\ $$$$\mathrm{then}\:\mathrm{find}\:{x}\:\mathrm{and}\:{y}. \\ $$ Answered by $@ty@m last updated on 23/Jun/19 $${Let}\:\mid{x}\mid={a}\:\&\mid{y}\mid={b} \\ $$$$\mathrm{5}{a}+\mathrm{4}{b}=\mathrm{4}\:\:…

If-2-x-3-y-6-z-then-1-x-1-y-1-z-

Question Number 62591 by hovea cw last updated on 23/Jun/19 $$\mathrm{If}\:\:\mathrm{2}^{{x}} =\:\mathrm{3}^{{y}} =\:\mathrm{6}^{{z}} ,\:\mathrm{then}\:\frac{\mathrm{1}}{{x}}\:+\:\frac{\mathrm{1}}{{y}}\:+\:\frac{\mathrm{1}}{{z}}\:=\:\_\_\_\_. \\ $$ Commented by mr W last updated on 23/Jun/19 $${could}\:{be}\:{any}\:{value}\:{in}\:\left(−\infty,\infty\right)\:{except}\:{zero}.…

If-tan-1-2-and-tan-1-3-then-the-value-of-is-

Question Number 62388 by hovea cw last updated on 20/Jun/19 $$\mathrm{If}\:\mathrm{tan}\:\theta=\frac{\mathrm{1}}{\mathrm{2}}\:\mathrm{and}\:\mathrm{tan}\:\phi=\frac{\mathrm{1}}{\mathrm{3}},\:\mathrm{then}\:\mathrm{the} \\ $$$$\mathrm{value}\:\mathrm{of}\:\:\theta\:+\:\phi\:\:\:\mathrm{is} \\ $$ Commented by Tony Lin last updated on 20/Jun/19 $${tan}\left(\theta+\emptyset\right)=\frac{{tan}\theta+{tan}\emptyset}{\mathrm{1}−{tan}\theta{tan}\phi}=\mathrm{1} \\…