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Questions in mathematics

[Done] What is the end behavior of the graph of the polynomial function [tex]$y=7 x^{12}-3 x^8-9 x^4$[/tex]? A. As [tex]$x \rightarrow-\infty, y \rightarrow-\infty$[/tex] and as [tex]$x \rightarrow \infty, y \rightarrow-\infty$[/tex]. B. As [tex]$x \rightarrow-\infty, y \rightarrow-\infty$[/tex] and as [tex]$x \rightarrow \infty, y \rightarrow \infty$[/tex]. C. As [tex]$x \rightarrow-\infty, y \rightarrow \infty$[/tex] and as [tex]$x \rightarrow \infty, y \rightarrow-\infty$[/tex]. D. As [tex]$x \rightarrow-\infty, y \rightarrow \infty$[/tex] and as [tex]$x \rightarrow \infty, y \rightarrow \infty$[/tex].

[Done] Which is the better deal: 20 soccer balls for $70 or 50 soccer balls for $157?

[Done] Find the distance on a number line between 16 and 104.

[Done] Which of the following has the largest standard deviation? $\begin{array}{l} A={2,4,6,8,10} \\ B={3,5,6,7,9} \\ C={4,5,6,7,8} \\ D={2,5,6,7,10} \end{array}$ A B C D

[Done] Which of the following equations correctly represents the distance between points $(1,-1)$ and $(-2,2)$? A. $d=\sqrt{(1-2)^2+(2-1)^2}$ B. $d=\sqrt{(1+2)+(-1-2)}$ C. $d=\sqrt{(1-2)^2+(-1+2)^2}$ D. $d=\sqrt{(1+2)^2+(-1-2)^2}$

[Done] What is the value of the 5 digit in each of these? a. 3452 -> 5 x 10 = _____ b. 1570 -> 5 x _____ = _____ c. 582 -> 5 x _____ = _____ d. 7405 -> 5 x _____ = _____ e. 5009 -> 5 x _____ = _____ f. 38.5 -> 5 x _____ or _____, _____ or _____ g. 200.35 -> 5 x _____ or _____, _____ or _____ h. 3459.26 -> 5 x _____ = _____

[Done] \begin{tabular}{l|llll} $P(x)$ & 0.2 & 0.4 & 0.3 & 0.1 \end{tabular} What is the expected value?

[Done] The average marks of 30 students in a maths test were found to be 55. However, it was later discovered that a mark of 72 was mistakenly recorded as 27, and another mark of 64 was mistakenly recorded as 46. What is the actual average score?

[Done] 1. Can you find shapes in everyday objects? They are all around us. Find two things at home of the following shapes and complete the table. | Cube | Cuboid | Cylinder | Cone | Sphere | |---|---|---|---|---| | | | | | | | | | | | | 2. Colour the objects that roll in red and those that slide in green.

[Done] Graph the function. $f(x)=\frac{1}{3} x^2-2 x+8$