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Questions in Grade High-school

📝 Answered - Combine like terms: [tex]x^2+3 y^2+x^2+3 x[/tex]

📝 Answered - $-\sqrt{500(17,852+1,993)}$

📝 Answered - Answer too 4^2/(2^3/((-1)x(9+(-5))))

📝 Answered - An equilateral triangle has a semiperimeter of 6 meters. What is the area of the triangle? Round to the nearest square meter.

📝 Answered - To calculate [tex]$4 \frac{-}{5} %$[/tex] tax on [tex]$$63.78$[/tex], multiply 4.2 times 63.78. Please select the best answer from the choices provided. T F

📝 Answered - Simplify $22-5(2 x+4)$.

📝 Answered - Fiona recorded the number of miles she biked each day last week as shown below: [tex]$4, 7, 4, 10, 5$[/tex] The mean is given by [tex]$m = 6$[/tex]. Which equation shows the variance for the number of miles Fiona biked last week? A. [tex]$s^2=\frac{(4-6)^2+(7-6)^2+(4-6)^2+(10-6)^2+(5-6)^2}{6}$[/tex] B. [tex]$\sigma=\sqrt{\frac{(4-6)^2+(7-6)^2+(4-6)^2+(10-6)^2+(5-6)^2}{5}}$[/tex] C. [tex]$S=\sqrt{\frac{(4-6)^2+(7-6)^2+(4-6)^2+(10-6)^2+(5-6)^2}{4}}$[/tex] D. [tex]$2(4-6)^2+(7-6)^2+(4-6)^2+(10-6)^2+(5-6)^2$[/tex]

📝 Answered - An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?

📝 Answered - Solve: [tex]\frac{x^2-x-6}{x^2}=\frac{x-6}{2 x}+\frac{2 x+12}{x}[/tex] After multiplying each side of the equation by the LCD and simplifying, the resulting equation is [tex]\square[/tex]

📝 Answered - To predict future enrollment in a school district, fifty households within the district were sampled and asked to disclose the number of children under the age of five living in the household. The results of the survey are presented in the table. Complete parts (a) through (c) below. \begin{tabular}{cc} \hline \multicolumn{2}{l}{\begin{tabular}{l} Number of Children Number of under 5 \end{tabular}} \\ \hline 0 & \begin{tabular}{c} Households \\ \hline 1 \end{tabular} \\ \hline 2 & 14 \\ \hline 3 & 16 \\ \hline 4 & 16 \\ \end{tabular} (a) Construct a relative frequency distribution of the data. \begin{tabular}{l|l|l} \hline \multicolumn{2}{l}{ Number of } & \multicolumn{2}{l}{ Relative } \\ Children under 5 & Frequency \\ \hline 0 & & \\ \hline 1 & & \\ \hline 2 & & \\ \hline 3 & & \\ \hline 4 & & \ \end{tabular} (Type integers or decimals. Do not round.)