Quiz about MWA-QOO-12_3_024

Question 1

Which is the product of $$x^{2\ }\cdot\ x$$ ?

Accepted Answer

$$x^{3}$$

Answer

$$x^{2}$$

Answer

$$2x^{2}$$

Answer

$$3x^{2}$$

Question 2

Which is the product of $$\left(x-5\right)^{2}$$ ?

Accepted Answer

$$x^{2}-10x+25$$

Answer

$$x^{2}-25$$

Answer

$$x^{2}+25$$

Answer

$$x^{2}-5x+25$$

Question 3

Which is the simplified form of $$6\left(x+x^2\right)\ -\ x\left(x-8\right)$$ ?

Accepted Answer

$$5x^2+14x$$

Answer

$$5x^2-14x$$

Answer

$$6x^3-2x+8x$$

Answer

$$x^3-6x^2-8x$$

Question 4

Which is the solution set of $$x^2\ +\ 3x\ +\ 2\ =\ 0$$ ?

Accepted Answer

$$\left\{-1,-2\right\}$$

Answer

$$\left\{1,2\right\}$$

Answer

$$\left\{-1,2\right\}$$

Answer

$$\left\{1,-2\right\}$$

Question 5

Which is the factored form of $$16a^{2\ }+\ 40a\ +25$$ ?

Accepted Answer

$$\left(4a+5\right)^2$$

Answer

$$\left(4a-5\right)^2$$

Answer

$$4a\left(4a+10\right)\ +25$$

Answer

$$a\left(16a+40\right)\ +\ 25$$

Question 6

Which is the simplified form of $$\frac{2\pm\sqrt{\ 20}}{2}$$ ?

Accepted Answer

$$1\pm\sqrt{5}$$

Answer

$$1\pm\sqrt{10}$$

Answer

$$1\pm2\sqrt{\ 5}$$

Answer

$$1\pm5\sqrt{2}$$

Question 7

Which is the factored form of $$2x^2+5x-12$$ ?

Accepted Answer

$$\left(2x-3\right)\left(x+4\right)$$

Answer

$$\left(2x+3\right)\left(x-4\right)$$

Answer

$$\left(x+8\right)\left(x-3\right)$$

Answer

$$\left(x-8\right)\left(x+3\right)$$

Question 8

Which is the solution set of: $$2a-1=-a$$

Accepted Answer

$$\left\{\frac{1}{3}\right\}$$

Answer

$$\left\{1\right\}$$

Answer

$$\left\{-\frac{1}{3}\right\}$$

Answer

$$\left\{3\right\}$$

Question 9

Which is the solution set of: $$2\left(x-1\right)^2=0$$

Accepted Answer

$$\left\{1\right\}$$

Answer

$$\left\{\frac{1}{2}\right\}$$

Answer

$$\left\{\pm1\right\}$$

Answer

$$\left\{\pm\sqrt{2}\right\}$$

Question 10

Which is the solution of: $$x^2-x-2>0$$

Accepted Answer

$$x\ <\ -1\ or\ x\ >\ 2$$

Answer

$$x<-2\ or\ x>1$$

Answer

$$-1<x<2$$

Answer

$$-2<x<1$$

Question 11

Which is the simplified form of $$\frac{2}{\sqrt[3]{x}}$$ ?

Accepted Answer

$$\frac{2\sqrt[3]{x^2}}{x}$$

Answer

$$\frac{2x\sqrt[3]{x}}{x}$$

Answer

$$\frac{2\sqrt{x^2}}{x}$$

Answer

$$2\sqrt[3]{x^2}$$

Question 12

Which is the product of $$\sqrt{11a}\cdot\ \sqrt{5b}$$ ?

Accepted Answer

$$\sqrt{55ab}$$

Answer

$$\sqrt{16ab}$$

Answer

$$55\sqrt{ab}$$

Answer

$$\sqrt{55a^2b^2}$$

Question 13

Which is the simplest form of $$\sqrt{8}+\sqrt{18}$$ ?

Accepted Answer

$$5\sqrt{2}$$

Answer

$$10\sqrt{2}$$

Answer

$$\sqrt{26}$$

Answer

$$5\sqrt{4}$$

Question 14

Which is the rationalized form of $$\frac{1}{\sqrt{x+y}}$$ ?

Accepted Answer

$$\frac{\sqrt{x+y}}{x+y}$$

Answer

$$\frac{1}{\sqrt{2x+2y}}$$

Answer

$$\frac{1}{x+y}$$

Answer

$$\frac{\sqrt{x+y}}{x-y}$$

Question 15

Which is the simplified form of $$2x-3\left(x+4\right)$$ ?

Accepted Answer

$$-x-12$$

Answer

$$2x^2-5x-12$$

Answer

$$2x^2+5x+12$$

Answer

$$x-12$$

Question 16

Which is the product of $$2\sqrt{2}\cdot\sqrt{3}$$

Accepted Answer

$$2\sqrt{6}$$

Answer

$$2\sqrt{5}$$

Answer

$$3\sqrt{6}$$

Answer

$$6\sqrt{2}$$

Question 17

Which is the solution set of $$4x=3x$$ ?

Accepted Answer

$$\left\{0\right\}$$

Answer

$$\left\{\frac{4}{3}\right\}$$

Answer

$$\left\{\frac{3}{4}\right\}$$

Answer

$$\left\{1\right\}$$

Question 18

Which is the simplified form of $$\sqrt{\frac{25m^6}{49n^8}}$$ ?

Accepted Answer

$$\frac{5m^3}{7n^4}$$

Answer

$$\frac{7m^3}{5n^4}$$

Answer

$$\frac{5m^4}{7n^3}$$

Answer

$$\frac{5n^3}{7m^4}$$

Question 19

Which is the slope of the line parallel to $$y\ =\ 5x\ +\ 2\ $$ ?

Accepted Answer

$$m = 5$$

Answer

$$m = \frac{1}{5}$$

Answer

$$m = -\frac{1}{5}$$

Answer

$$m = -5$$

Question 20

Which is the slope of the line perpendicular to $$y\ =\ 5x\ +\ 2\ $$ ?

Accepted Answer

$$m = -\frac{1}{5}$$

Answer

$$m = \frac{1}{5}$$

Answer

$$m = -5$$

Answer

$$m = 5$$

Question 21

Which is the $$m\angle\ a$$

Accepted Answer

$$m\angle\ a = 31^o$$

Answer

$$m\angle\ a = 66^o$$

Answer

$$m\angle\ a = 35^o$$

Answer

$$m\angle\ a = 114^o$$

Question 22

Which is $$m\angle\ w\ ?$$

Accepted Answer

$$m\angle\ w\ =35^{o\ }$$

Answer

$$m\angle\ w\ =\ 25^{o\ }$$

Answer

$$m\angle\ w\ =\ 70^{o\ }$$

Answer

$$m\angle\ w\ =\ 90^{o\ }$$

Question 23

Which is the sum of all the interior angles in a triangle?

Accepted Answer

$$180^o$$

Answer

$$90^o$$

Answer

$$360^o$$

Answer

$$720^o$$

Question 24

Which is the slope of $$\overline{AC\ }$$ ?

Accepted Answer

$$m=-\frac{4}{7}$$

Answer

$$m=\frac{4}{7}$$

Answer

$$m=-\frac{7}{4}$$

Answer

$$m=\frac{7}{4}$$

Question 25

Which is the slope of $$\overline{AB}$$ ?

Accepted Answer

$$m = \frac{2}{3}$$

Answer

$$m=-\frac{2}{3}$$

Answer

$$m=-\frac{3}{2}$$

Answer

$$m = \frac{3}{2}$$

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