C

9000026010

Level: 
C
In the picture, the shaded region corresponds to the set of points that is the solution to one of the given systems of inequalities. Which of the systems is it?
\(\begin{aligned}x &\leq 3 & \\5x& < 9 - 3y \\ \end{aligned}\)
\(\begin{aligned}x & < 3 & \\5x& < 9 - 3y \\ \end{aligned}\)
\(\begin{aligned}x & > 3 & \\5x& < 9 - 3y \\ \end{aligned}\)
\(\begin{aligned}x &\leq 3 & \\5x& > 9 - 3y \\ \end{aligned}\)

9000025808

Level: 
C
In the following list identify a true statement on the function \(f\). \[ f(x) = \frac{(x - 1)(x + 2)} {(2x + 1)(3 - 2x)} \]
\(f(x) > 0 \iff x\in \left (-2;-\frac{1} {2}\right )\cup \left (1; \frac{3} {2}\right )\)
\(f(x) > 0 \iff x\in (-\infty ;-2)\cup \left (-\frac{1} {2};1\right )\cup \left (\frac{3} {2};\infty \right )\)
\(f(x) > 0 \iff x\in (-\infty ;-2)\cup (1;\infty )\)
\(f(x) > 0 \iff x\in \left (-2; \frac{3} {2}\right )\)

9000025809

Level: 
C
In the following list identify a true statement on the function \(f\). \[ f(x)= \frac{(6x - 1)} {(x - 2)(3x + 1)} \]
\(f(x)\geq 0 \iff x\in \left (-\frac{1} {3}; \frac{1} {6}\right ] \cup (2;\infty )\)
\(f(x)\geq 0 \iff x\in \left (-\frac{1} {3}; \frac{1} {6}\right )\cup (2;\infty )\)
\(f(x)\geq 0 \iff x\in \left (-\infty ;-\frac{1} {3}\right )\cup \left [ \frac{1} {6};2\right )\)
\(f(x)\geq 0 \iff x\in \left [ -\frac{1} {3}; \frac{1} {6}\right ] \cup (2;\infty )\)

9000025810

Level: 
C
In the following list identify a true statement on the function \(f\). \[ f(x) = \frac{(x - 2)(3 - x)} {(2x - 1)(3x - 1)} \]
\(f(x)\geq 0 \iff x\in \left (\frac{1} {3}; \frac{1} {2}\right )\cup [ 2;3] \)
\(f(x)\geq 0 \iff x\in \left [ \frac{1} {3}; \frac{1} {2}\right ] \cup [ 2;3] \)
\(f(x)\geq 0 \iff x\in \left (-\infty ; \frac{1} {3}\right )\cup \left [ \frac{1} {2};2\right ] \cup [ 3;\infty )\)
\(f(x)\geq 0 \iff x\in \left (\frac{1} {3}; \frac{1} {2}\right )\cup (2;3)\)

9000025807

Level: 
C
In the following list identify a true statement on the function \(f\). \[ f(x) = \frac{-2(3x + 1)} {(2x + 3)(2 - x)} \]
\(f(x) > 0 \iff x\in \left (-\frac{3} {2};-\frac{1} {3}\right )\cup (2;\infty )\)
\(f(x) > 0 \iff x\in \left (-\infty ;-\frac{3} {2}\right )\cup \left (-\frac{1} {3};2\right )\)
\(f(x) > 0 \iff x\in \left (-\frac{3} {2};2\right )\)
\(f(x) > 0 \iff x\in \left (-\infty ;-\frac{3} {2}\right )\cup (2;\infty )\)

9000024805

Level: 
C
A falling body dropped at a velocity \(60\, \mathrm{m}\mathrm{s}^{-1}\). Find the initial height \(h\), if the relation between the velocity and the initial height \(h\) is \(v = \sqrt{2hg}\). Use \(g = 10\, \mathrm{m}\mathrm{s}^{-2}\) for acceleration of gravity.
The initial height is between \(150\, \mathrm{m}\) and \(200\, \mathrm{m}\).
The initial height is smaller than \(100\, \mathrm{m}\).
The initial height is between \(100\, \mathrm{m}\) and \(150\, \mathrm{m}\).
The initial height is bigger than \(200\, \mathrm{m}\).