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- Multiple ChoicePlease save your changes before editing any questions.
It takes 20 workers 6 hours to build a wall. How much time would 30 workers need to complete the job?

4 hours

16 hours

40 hours

2 hours

- Multiple ChoicePlease save your changes before editing any questions.
It takes 10 waitresses 3 hours to serve food. How much food would be served if 5 more waitresses were hired?

2 hours

1 hour

8 hours

3 hours

- Multiple ChoicePlease save your changes before editing any questions.
Factorize the equation

$x^2+11x+18$$\left(x+9\right)\left(x+2\right)$

$\left(x-9\right)\left(x-2\right)$

$\left(x+6\right)\left(x+3\right)$

$\left(x-6\right)\left(x-5\right)$

- Multiple ChoicePlease save your changes before editing any questions.
Use the quadratic formula to solve this equation

$\frac{-b+-\sqrt{b^2-4ac}}{2a}$ )

(Hint:x= -3.14 or x= 4.14

x= 3.14 or x= 4.14

x=-4.14 or x= -3.14

- Multiple ChoicePlease save your changes before editing any questions.
Set A=(1, 2, 3, 4, 5, 6, 7, 8, 9, 10)

$X\cap Y$

Set X=(2, 4, 6, 8, 10)

Set Y=(1, 3, 5, 7, 9, 10)

Find10

(0)

- Multiple ChoicePlease save your changes before editing any questions.
Inverse proportion between two values is shown when one __________ as the other ____________.

Increases, decreases

Decreases, decreases

Increases, increases

- Multiple ChoicePlease save your changes before editing any questions.
Direct proportion between two values is shown when one _________________ as the other _________________.

Increases/decreases, increases/decreases

Increases, increases

Decreases, decreases

- Multiple ChoicePlease save your changes before editing any questions.
These are last week's test scores

3, 4, 5, 5, 5, 5, 6, 7, 7, 7, 8, 9, 10, 10

Calculate the mean score.

6.5

7.5

6

8.5

- Multiple ChoicePlease save your changes before editing any questions.
Two vertically opposite angles are drawn. One is

$2x+20\degree$ big and the other is $x+30\degree$ big. Calculate their values.x=10, so they both are equal to 40 degrees

x=40, so they both are equal to 10 degrees

- Multiple ChoicePlease save your changes before editing any questions.
$2x+4>6$

Solve the inequality

$x>1$

$x<1$

$x\ge1$

$x\le1$

- Multiple ChoicePlease save your changes before editing any questions.
$6-3x<3$

Solve the inequality

$x>1$

$x<1$

- Multiple ChoicePlease save your changes before editing any questions.
$'\in'$ means _____________.

Is an element of

Is not an element of

- Multiple ChoicePlease save your changes before editing any questions.
$'\notin'$ means ______________.

Is not an element of

Is an element of

- Multiple ChoicePlease save your changes before editing any questions.
$'\subseteq'$ refers to __________________.

An improper set

A proper set

- Multiple ChoicePlease save your changes before editing any questions.
$'\subset'$ refers to ______________.

A proper set

An empty set

An improper set

- Multiple ChoicePlease save your changes before editing any questions.
Order the numbers 0.1, 0.01, 1.1, 1.01 from smallest to largest

0.01, 0.1, 1.01, 1.1

1.1, 1.01, 0.1, 0.01

1.01, 1.1, 0.1, 0.01

- Multiple ChoicePlease save your changes before editing any questions.
Add two more items to set A

Set A=(Sharjah, Dubai, Abu Dhabi,...)

Fujairah, Ajman

New York, Las Vegas

Darwin, Melbourne

- Multiple ChoicePlease save your changes before editing any questions.
Add two more items to set X

Set X=(Alex, Andrew,...)

Anders, Alan

Mason, Mark

Amy, Amelia

- Multiple ChoicePlease save your changes before editing any questions.
$'\cup'$ refers to ____________.

Union

Intersection

- Multiple ChoicePlease save your changes before editing any questions.
$'\cap'$ refers to _____________.

Intersection

Union