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Questions in Grade High-school

📝 Answered - If [tex]$QR = 5x$[/tex], [tex]$RS = x + 10$[/tex], and [tex]$QS = 16$[/tex], what is [tex]$RS$[/tex]?

📝 Answered - Usas la computadora después de las clases o por la noche?

📝 Answered - The test scores of a geometry class are given below: [tex]$90,75,72,88,85$[/tex] The teacher wants to find the variance for the class population. What is the value of the numerator of the calculation of the variance? Variance: [tex]$\sigma^2=\frac{\left(x_1-\mu\right)^2+\left(x_2-\mu\right)^2+\ldots+\left(x_N-\mu\right)^2}{N}$[/tex] A. -160 B. -6 C. 16 D. 258

📝 Answered - Solve for $x$. $2(x+4)+2 x-1=19$

📝 Answered - $\begin{aligned} 6 x-2(x-5) & =-2 \\ 6 x-2 x-10 & =-2 \\ 4 x-10 & =-2 \\ 4 x-10+10 & =-2+10 \\ \frac{4 x}{4} & =\frac{8}{4} \\ x & =2\end{aligned}$

📝 Answered - Country Group #4: New Zealand Uganda under Idi Amin Dada's rule Mexico U.S.S.R. Israel

📝 Answered - According to Swift, what was the purpose of publishing Gulliver's Travels? A. He wanted to entertain readers with a funny and heartwarming story highlighting English characters. B. He wanted to make fun of the upper class of England and their practices. C. He wanted to correct human failings and remind people of basic human kindnesses. D. He wanted to insult political officials so English society would call for their executions.

📝 Answered - The following data pairs represent the average temperature [tex]$x$[/tex] (in degrees Fahrenheit) and electricity costs [tex]$y$[/tex] (in dollars) for different homes: [tex]$\begin{array}{l} (65,147),(59,141),(71,176),(78,189),(82,183),(85,211) \\ (88,231),(91,227),(84,198),(79,188),(63,152),(59,126) \end{array}$[/tex] Which of the following values is most likely the closest to the correlation coefficient of the data? A. [tex]$r=-1$[/tex] B. [tex]$r=-0.5$[/tex] C. [tex]$r=0$[/tex] D. [tex]$r=0.5$[/tex] E. [tex]$r=1$[/tex]

📝 Answered - A car drives 215 km West and then 85 km South. Find the distance and displacement of the car.

📝 Answered - The speed of light is approximately 3.0 x 10^8 m/s. How would this be written in standard notation? A) 300,000 m/s B) 30,000,000 m/s C) 3,000,000 m/s D) 300,000,000 m/s