Questions in mathematics

Questions in mathematics

📝 Answered - Simplify. $\begin{array}{c} (\sqrt{-5}+2 \sqrt{20})(-\sqrt{-5}) \\{[?]+\square i}\end{array}$

📝 Answered - (ii) 6 2. A regular polygon has 7 sides. Find (a) The exterior angle (b) The interior angle 3. The interior angles of a pentagon are [tex]$100^{\circ}, x^{\circ},(3 x+30)^{\circ}=(2 x-10)$[/tex] (c) The sum of interior angle 4. The ratio of the interior to the exterior angles of a regular polygon [tex]$x: y$[/tex] and [tex]$80^{\circ}$[/tex]. Find [tex]$x^{\circ}$[/tex]. (a) Find the number of sides of the polygon in term of (b) Find the number of sides of the polygon if [tex]$x: y=3: 2$[/tex]

📝 Answered - Jillana begins to solve a linear equation that results in a variable expression set equal to the same variable expression. Which is the best interpretation of this solution? The equation has one solution: [tex]$x=0$[/tex]. The equation has one solution: [tex]$x=1$[/tex]. The equation has no solution. The equation has infinite solutions.

📝 Answered - Solve the system by substitution. Check your solution. $0.5 x+0.25 y=36$ $y+18=16 x$ a. $(36,72)$ c. $(49,81)$ b. $(9,126)$ d. $(21,9)$

📝 Answered - Find the missing numerator: [tex]$\frac{10}{15}=\frac{?}{60}$[/tex].

📝 Answered - Multiply $(9-4 i)(2+5 i)$

📝 Answered - A tray of eggs contains 16 large sized eggs and 14 small sized eggs. An egg is selected at random. Find the probability of selecting either a small sized or large-sized egg. If [tex]T^2=4 \pi^2 \frac{\left(h^2+k^2\right)}{h g}[/tex] make 'k' the subject of the formula.

📝 Answered - Simplify: [tex]$10^3+10^1+10^0$[/tex]

📝 Answered - What is the smallest number which must be subtracted from 68 to make it divisible by 7?

📝 Answered - Solve the proportion. $\frac{2}{10}=\frac{11}{x}$