Category: Arithmetic

Question Number 200321 by mr W last updated on 17/Nov/23 $$forx,y,z\in N,if$$$$38x+40y+41z=520$$$$findx+y+z=?$$ Answered by Rasheed.Sindhi last updated on 17/Nov/23 $$\mathrm{520}−\mathrm{38}{x}−\mathrm{40}{y}=\mathrm{41}{z}…

Question Number 200265 by cherokeesay last updated on 16/Nov/23 Answered by witcher3 last updated on 16/Nov/23 $$\{\begin{array}{l}{({\mathrm{x}}^2-\mathrm{y})}^2+5^2-2.5({\mathrm{x}}^2-\mathrm{y})=0\\ \left(2\right)\iff \left(2\right)\end{array}$$$$\Leftrightarrow\begin{cases}{\left(\mathrm{x}^{\mathrm{2}} −\mathrm{y}−\mathrm{5}\right)^{\mathrm{2}} =\mathrm{0}}\{\sqrt{\left(\mathrm{x}^{\mathrm{2}}…

Question Number 200121 by Mingma last updated on 14/Nov/23 Terms of Service Privacy Policy Contact: info@tinkutara.com

Question Number 200004 by Mingma last updated on 12/Nov/23 Answered by aleks041103 last updated on 12/Nov/23 $$-1<x<1$$$${f}\left({x}\right)=\frac{{x}+\mathrm{2}^{{k}} }{\mathrm{2}^{{k}+\mathrm{1}} }=\frac{{x}}{\mathrm{2}^{{k}+\mathrm{1}} }+\frac{\mathrm{1}}{\mathrm{2}}\Rightarrow\frac{\mathrm{1}}{\mathrm{2}}−\frac{\mathrm{1}}{\mathrm{2}^{{k}+\mathrm{1}} }<{f}\left({x}\right)<\frac{\mathrm{1}}{\mathrm{2}}+\frac{\mathrm{1}}{\mathrm{2}^{{k}+\mathrm{1}} } \…

Question Number 199863 by Karanji last updated on 10/Nov/23 $$-5+(-8)+(-11)+\dots +(-230)$$ Answered by som(math1967) last updated on 10/Nov/23 $$c.d=(-8)-(-5)=-3$$$$-230=-5+(n-1)\times -3$$$$\Rightarrow\left({n}−\mathrm{1}\right)=\mathrm{75} \…