2110016205 Level: BIdentify a picture that shows the correct solution set of the following inequality. The solution set is marked in red. \[ -0.5x+\frac{2x+1}2\leq 2 \]
2110016204 Level: BIdentify a picture that shows the correct solution set of the following inequality. The solution set is marked in red. \[ 0.5x + 2 < -2x +8 \]
2110016202 Level: BSolve the following inequality and choose the diagram that shows the correct solution set marked in red on the number line. \[ 4.5 - 0.7x < 1 - 2.1x\]
2010016203 Level: BFind the minimal integer which satisfies the following inequality. \[ 3x - 1 \leq 7x-8 \]\( 2 \)\( 0 \)\(3\)\( 1 \)
2010016201 Level: BFind the linear inequality of which the solution set is shown in red in the graph below.\( \frac{x+4}2 > 6-x \)\( \frac{x-4}2 > 6-x \)\( x+2 \geq 6-x \)\( \frac{x+4}2 < 6-x \)
2010015407 Level: AFind the solution set of the following equation. \[x\sqrt5 -2\sqrt{10}x=-35\]\( \left\{ \sqrt5+2\sqrt{10}\right\}\)\( \left\{ \sqrt5-2\sqrt{10}\right\}\)\( \left\{ -\sqrt5+\sqrt{10}\right\}\)\( \left\{ \sqrt5-\sqrt{10}\right\}\)
2010015406 Level: AFind the solution set of the following equation. \[2\sqrt2 x-5 =x\sqrt3\]\( \left\{ 2\sqrt2+\sqrt3\right\}\)\( \left\{ 2\sqrt2-\sqrt3\right\}\)\( \left\{ \sqrt2+\sqrt3\right\}\)\( \left\{ \sqrt2-\sqrt3\right\}\)
2010015405 Level: CThe ratio of ages of a mother and her daughter is \(3: 1\). Ten years ago, the ratio of their ages was \(8 : 1\). How old is the mother today?\(42\) years\(32\) years\(52\) years\(45\) years
2010015404 Level: CThe average age in the group of six persons is \(48\) years. The average age of the first five of them is \(51\) years. How old is the sixth person?\(33\) years\(32.5\) years\(39.5\) years\(43\) years
2010015403 Level: AChoose the equation whose graphical solution is in the picture.\( -\frac49x+1=\frac29x-2\)\( -\frac94x+1=\frac29x-2\)\( -\frac49x+1=\frac92x-2\)\( -\frac94x+1=\frac92x-2\)