Vikram
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 17h awarded Popular Question Aug 26 answered A carpenter used 1/9 of a box of nails… Aug 25 answered Solving for $x$ in an exponential equation Jul 31 comment Quadratic equation roots values was positive but shown as negative if $a$ and $b$ are the roots of an equation then the equation can be written as $(x-a)(x-b)=0$, if you expand $(x-1/4)(x-4)$ you will get the original equation Jul 21 awarded Favorite Question Jul 19 revised Expand the Logarithmic Expression. latex added Jul 18 comment Calculate sales price factoring cost of goods and taxes sorry for the mistake, first you add % profit to your making cost and calculate % sales tax on it and add that too; if making cost is $100$ adding $32\%$ profit gives $132$, $1.5\%$ sales tax on $132$ is $1.98$, so your selling price should be $132 + 1.98 = 133.98$ Jul 13 comment Getting formula based on graph very close to positive side of $y=\frac{100}{x}$ Jul 13 comment Is there any difference between 'all real numbers' and '$(-\infty, \infty)$' +1 and I agree with Antonio Jul 13 comment Calculate sales price factoring cost of goods and taxes If $A$ is the selling price of each widget and $x$ is the making cost for each widget then $( A - 0.015 A) = 0.32 x$ Jul 11 revised Problems on solving an equation. latex added Jun 30 comment understanding how multiplying a number by itself and than using the result for division gives you a consistent result since no paranthesis are used start from left to right, step (1) $1200 / 40 = 30$, step (2) $30 \times 40 = 1200$ Jun 28 comment Advise me a book please Higher Algebra by Hall and Knight and Coordinate Geometry by Loney , both available free at www.archive.org, for drawing graphs "Plotting Graphs" by Shilov at www.mirtitles.org Jun 26 comment find coordinate on line at given distance from given coordinate $5=\sqrt{(x+2)^2+(y+4)^2}\Rightarrow (x+2)^2+(y+4)^2=25$...(I); slope=$\frac{4+4}{3+2}=\frac{8}{5}$ ; $y=\frac{8}{5}x+c \Rightarrow -4=-(\frac{8}{5})2+c \Rightarrow -4+\frac{16}{5}=-\frac{4}{5}=c$ ; $\therefore y=\frac{8}{5}x-\frac{4}{5}\Rightarrow 5y=8x-4$...(II), solve (I) and (II), you will get two points Jun 26 reviewed Approve find coordinate on line at given distance from given coordinate Jun 26 comment Why do we switch the denominator and numerator when we divide fractions? denominator's denominator is numerator Jun 23 answered How to get the given equality? Jun 23 comment what is first negative term of this series given series I think it will be 6th term, because for the 6th term the coefficient $(n-1)(n-2)(n-3)(n-4)(n-5)$ will be negative as $\frac{13}{3}-5=\frac{13-15}{3}=\frac{-2}{3}$ Jun 21 comment Coordinate Geometry and Trigonometry book recommendation for GRE Math Subject Test have a look at Coordinate Geometry by Loney and Trigonometry by Loney, both are classics, softcopy free available at archive.org, very cheap hardcopy available in India, both are used by students preparing for IIT entrance, very concise theory and large number of problems with answers. Jun 19 comment Value of $\frac{1}{\log_aabc}+\frac{1}{\log_babc}+\frac{1}{\log_cabc}$ $y=\frac{\ln a}{\ln abc}+\frac{\ln b}{\ln abc}+\frac{\ln c}{\ln abc}$