Questions in mathematics

Questions in mathematics

📝 Answered - $38 \overline{)27664}$

📝 Answered - If [tex]A=\left[\begin{array}{cc}3 & 5 \\ 1 & -9\end{array}\right][/tex] and [tex]B=\left[\begin{array}{ll}0 & 4 \\ 6 & 3\end{array}\right][/tex] show that: 1) [tex]A+B=B+A[/tex] ii) [tex]2 A-2 B=2(A-B)[/tex].

📝 Answered - Calculate the total discount offered.

📝 Answered - Evaluate $3 x^3-2 y^2$ when $x=-2$ and $y=4$

📝 Answered - Simplify $\left(\frac{2}{3}\right)^3\left(\frac{1}{5} \cdot \frac{2}{3}\right)^{-3}\left(\frac{1}{5}\right)^4$.

📝 Answered - Solve the equation for $x$. $1=1-5x-7x$

📝 Answered - Find the distance between the pair of points (2,3) and (8,9). If necessary, express the answer in simplified radical form and then round to two decimal places.

📝 Answered - Which polynomial is factored completely? $121 x^2+36 y^2$ $(4 x+4)(x+1)$ $2 x\left(x^2-4\right)$ $3 x^4-15 n^3+12 n^2$

📝 Answered - Find the anti-derivative and simplify. [tex]\begin{array}{l} \int \frac{\sec ^2 x}{\tan x \sqrt{\tan ^2 x-1}} d x \\ =[?]^{-1}|[\quad] x|+C \end{array}[/tex] Hint: Let [tex]$u =\tan x$[/tex]

📝 Answered - Solve $5 a \geq a+24$