Quiz about Grade 10 Quiz: Number System, Word Problems and Proportional Int

Question 1

If $$\frac{a}{1}$$ is a rational number, which values can $$a$$ have? [2 Marks]

A : 1

B: $$-10$$

C: $$\sqrt[]{2}$$

D : $$2,1$$

Accepted Answer

A, B and D

Answer

All of the above

Answer

A, B and C

Answer

B, C and D

Question 2

Which list of numbers represents a set of Integers? [2 Marks]

Accepted Answer

$$\left\{\sqrt[3]{-8},\ \frac{0}{7}\ ,\ 125\right\}$$

Answer

$$\left\{-1,\ -\pi\ ,\ 0\right\}$$

Answer

$$\left\{-1000,\ -1.9\ ,\ \frac{-1}{2}\right\}$$

Answer

$$\left\{\frac{-3}{4},\ 18\ ,\ -5\right\}$$

Question 3

The solution to the linear inequality $$-5x+10\le-2x+1;\ x\ \epsilon\ R$$ represented in interval notation is: [3 Marks]

Accepted Answer

$$x\ \epsilon\ \left[3\ ;\ \infty\right)$$

Answer

$$x\ \epsilon\ \left(-\infty;\ 3\right]$$

Answer

$$x\ \epsilon\ \left[-3;3\right]$$

Answer

None. This set of numbers cannot be represented in Interval Notation.

Question 4

What inequality does the following number line represent? [2 Marks]

Accepted Answer

$$-2<x\le4;\ x\ \epsilon\ R$$

Answer

$$-2<x\le4;\ x\ \epsilon\ Z$$

Answer

$$-2\le x<4;\ x\ \epsilon\ R$$

Answer

$$-2\le x<4;\ x\ \epsilon\ Z$$

Question 5

A mother is three times as old as her daughter. The mother was six times her daughters age 15 years ago. If we let the daughters age $$=x$$ , which expression represents the mothers age 15 years ago? [2 Marks]

Accepted Answer

$$6\left(x-15\right)$$

Answer

$$3x$$

Answer

$$3x-15$$

Answer

$$x$$

Question 6

What is the value of $$x$$ in the diagram? [2 Marks]

Accepted Answer

$$4.8m$$

Answer

$$8m$$

Answer

$$6.8m$$

Answer

$$5m$$

Grade 10 Quiz: Number System, Word Problems and Proportional Int

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