Questions in mathematics

Questions in mathematics

📝 Answered - Draw a design, object, or creature and find the coordinates. How to do the activity: - Take the graph paper and draw two perpendicular lines to obtain four quadrants.

📝 Answered - Drug concentrations: A sample of 10 people ingested a new formulation of a drug. Six hours later, the concentrations in their bloodstreams, in nanograms per milliliter, were as follows: 1.2, 3.2, 2.5, 1.5, 3.1, 2.7, 1.3, 4.1, 1.1, 2.2 Part 1 of 2 (a) Construct a dotplot for the given sample. Part 2 of 2 (b) Is it reasonable to treat the sample as coming from an approximately normal population? Explain. Yes No

📝 Answered - Select the correct answer. Find the mistake made in the steps to solve the equation below.$\begin{aligned} 6 x-1 & = -2 x+9 \ 8 x-1 & = 9 \ 8 x & = 10 \ x & =\frac{8}{10} \ x & = \frac{4}{5} \end{aligned}$ 1. Addition property of equality 2. Addition property of equality 3. Division property of equality 4. Simplification A. The justification for step 2 is incorrect and should be the subtraction property of equality. B. The justification for step 3 is incorrect and should be the multiplication property of equality. C. Step 3 is incorrect and should be $x=\frac{10}{8}$. D. Step 2 is incorrect and should be $8 x=8$.

📝 Answered - Which of the following describes the graph of [tex]y=\sqrt{-4 x-36}[/tex] compared to the parent square root function? A. stretched by a factor of 2, reflected over the [tex]x[/tex]-axis, and translated 9 units right B. stretched by a factor of 2, reflected over the [tex]x[/tex]-axis, and translated 9 units left C. stretched by a factor of 2, reflected over the [tex]y[/tex]-axis, and translated 9 units right D. stretched by a factor of 2, reflected over the [tex]y[/tex]-axis, and translated 9 units left

📝 Answered - In your own words, define and give an example of each of the following terms when used in basic statistical computing: (a) Value (b) Variable (c) Sample (d) Population (e) Parameter (f) Statistic (g) Statistical inference (h) Data

📝 Answered - Find the solution of the system of equations. [tex] \begin{aligned} 2 x-9 y & =14 \ -5 x+9 y & =-8 \end{aligned} [/tex]

📝 Answered - 1. Which of the following rational numbers are equal? (i) [tex]$\frac{-7}{21}$[/tex] and [tex]$\frac{3}{-9}$[/tex] (ii) [tex]$\frac{-8}{-14}$[/tex] and [tex]$\frac{4}{7}$[/tex] 2. Which pairs represent the same rational number? (i) [tex]$\frac{-11}{-13}$[/tex] and [tex]$\frac{33}{39}$[/tex] (ii) [tex]$\frac{7}{13}$[/tex] and [tex]$\frac{35}{-65}$[/tex]

📝 Answered - The midpoint of ST is W(-3, 1). Point S is located at (-7,-9). What are the coordinates of point T?

📝 Answered - The point $(4,1)$ is a solution to the following system of inequalities: [tex] \begin{array}{l} 2 x+y\ \textgreater \ 3 \ 3 x-y\ \textless \ 1 \end{array} [/tex] True or False?

📝 Answered - Multiply $\begin{array}{ll}3 & 5 \\ \times & 3\end{array}$