Quiz about Maths Grade 11

Question 1

Factorise 4x²- 49

Accepted Answer

(2x +7)(2x-7)

Answer

(2x - 7)(2x - 7)

Answer

(7 +2x)(7 - 2x)

Answer

(7 - 2x)(7- 2x)

Question 2

What is a scalene triangle?

Accepted Answer

A triangle with 3 different sides.

Answer

A triangle with all sides equal.

Answer

A triangle with 2 sides and 2 angles equal.

Answer

None of the above.

Question 3

Solve the simultaneous equations

$$3x+5y=21$$

$$2x+y=7$$

Accepted Answer

$$x=2$$

$$y=3$$

Answer

$$x=2$$

$$y=-3$$

Answer

$$x=-2$$

$$y=3$$

Answer

$$x=-2$$

$$y=-3$$

Question 4

If $$y=\frac{3x+4}{2x-1}$$ , express x in terms oy y

Accepted Answer

$$x=\frac{4+y}{2y-3}$$

Answer

$$x=\frac{4-y}{2y-3}$$

Answer

$$x=\frac{2y-3}{4+y}$$

Answer

$$x=\frac{4+y}{2y+3}$$

Question 5

What is the name given to a polygon with 7 sides?

Accepted Answer

heptagon

Answer

hexagon

Answer

pentagon

Answer

octagon

Question 6

The equation of a straight line is $$3y+2x+6=0$$ . What is the gradient of this line?

Accepted Answer

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

Answer

2

Answer

-2

Answer

$$\frac{2}{3}$$

Question 7

Solve the equation $$2x^2-5x+1=0$$ , giving your answers correct to 2 d.p.

Accepted Answer

$$x=2.28\ or\ x=0.22$$

Answer

$$x=2.22\ or\ x=\ 0.28$$

Answer

$$x=-2.28\ or\ x=-0.22$$

Answer

$$x=-2.28\ or\ x=0.22$$

Question 8

A cuboid with a length of 20cm and a width of 8cm has a volume of 2400 $$cm^3$$ . what is its height?

Accepted Answer

15 cm

Answer

12 cm

Answer

16 cm

Answer

10 cm

Question 9

A and B are the points (1, 2) and (13, 7) respectively. Find the length of AB.

Accepted Answer

13 units

Answer

12 units

Answer

15 units

Answer

14 units

Question 10

Write down the next two terms of the following sequence

1, 3, 6, 10, --------, --------

Accepted Answer

15 & 21

Answer

14 & 18

Answer

15 & 20

Answer

14 & 19

Question 11

Solve the equation $$2\left(2x-1\right)-5\left(x-1\right)=1$$

Accepted Answer

$$x=2$$

Answer

$$x=-2$$

Answer

$$x=-3$$

Answer

$$x=3$$

Question 12

Which of the following is an obtuse angle?

Accepted Answer

$$104\degree$$

Answer

$$25\degree$$

Answer

$$315\degree$$

Answer

$$180\degree$$

Question 13

Find the sum of interior angles of a dodecagon

Accepted Answer

$$1800\degree$$

Answer

$$2160\degree$$

Answer

$$1980\degree$$

Answer

$$1620\degree$$

Question 14

What is the nth term of the sequence 3, 9, 15, 21, .......?

Accepted Answer

$$6n-3$$

Answer

$$6n-2$$

Answer

$$6n+2$$

Answer

$$6n+3$$

Question 15

Evaluate $$\frac{3}{8}+\frac{1}{4} imes3\frac{1}{3}$$

Accepted Answer

$$\frac{29}{24}$$

Answer

$$\frac{25}{12}$$

Answer

$$1\frac{7}{24}$$

Answer

$$2\frac{1}{12}$$

Question 16

Calculate the compound interest on an investment of Rs 50 000 at the rate of 10% per annum for 2 years.

Accepted Answer

Rs 10500

Answer

Rs 10000

Answer

Rs 12000

Answer

Rs 11000

Question 17

Find the area of a circle with a diameter of 20cm.

Accepted Answer

314.2 $$cm^2$$

Answer

1256.6 $$cm^2$$

Answer

628.3 $$cm^2$$

Answer

2513.3 $$cm^2$$

Question 18

Evaluate $$5^0+5^3 imes5^{-4}$$

Accepted Answer

$$1\frac{1}{5}$$

Answer

$$\frac{1}{5}$$

Answer

$$\frac{1}{4}$$

Answer

$$1\frac{1}{4}$$

Question 19

Find the curved surface area of a cylinder with a radius of 5cm and a height of 12cm.

Accepted Answer

377 $$cm^2$$

Answer

189 $$cm^2$$

Answer

942 $$cm^2$$

Answer

471 $$cm^2$$

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