Answers created by Xytl

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How do you find the distance between (-2,3), (-1,7)?
How do you simplify $3 (3 x + 3) + 7 (x - 4)$ $3(3x+3)+7(x-4)$ ?
How do you factor $9 x^{3} - x$ $9x^3-x$ ?
If coefficient of correlation, “r” between two variables is zero, does it mean that there is no relationship between the variables?
How do you solve $\frac{x - 4}{x - 2} = \frac{x - 2}{x + 2} + \frac{1}{x - 2}$ $(x-4)/(x-2) = (x-2)/(x+2) + (1)/(x-2)$ ?
How do you solve $49 b^{2} + 84 b + 32 = 0$ $49b^2 + 84b + 32 = 0$ by completing the square?
What is $3 m^{8} n \cdot (- 9 m n^{2})$ $3m^8n * (-9mn^2)$ ?
How do you find the slope that is perpendicular to the line $y = 3 x + 2$ $y=3x+2$ ?
The ratio of boys to girls in a school choir is 4:3. There are 6 more boys than girls. If another 2 girls join the choir, what will be the new ratio of boys to girls?