Mathematics questions and answers

Mathematics Questions and Answers

How good are you with figures and formulas? Find out with these Mathematics past questions and answers. This Test is useful for both job aptitude test candidates and students preparing for JAMB, WAEC, NECO or Post UTME.

1,551.

From the diagram given, find the bearing of R from S

A.

226o

B.

224o

C.

136o

D.

134o

Correct answer is B

The bearing of R from S = 180 + 44 = 224º, because

-Following the clockwise movement at 90º:

-NORTH -EAST, EAST-SOUTH, SOUTH - WEST & WEST - NORTH

- It is observed that R is situated between SOUTH - WEST poles on S

1,552.

In the diagram above, O is the centre of the circle, If < UOT = 70o and < RST = 100o. Calculate < RUO

A.

20o

B.

25o

C.

50o

D.

80o

Correct answer is B

< OUT = < OTU

< OUT = \(\frac{180^o - 70^o}{2} = \frac{110^o}{2} = 55^o\)

< RUT = 180o - 100o = 80o

< RUO = < RUT - < OUT

= 80o - 55o

= 25o

1,553.

in the diagram above, calculate the value of x.

A.

60o

B.

100o

C.

120o

D.

140o

Correct answer is C

No explanation has been provided for this answer.

1,554.

The diagram above is the graph of the function f(x). Determine the range of values of x for which f(x) \(\geq\) 0.

A.

x \(\geq\) 2

B.

0 \(\geq\) x \(\geq\) 2

C.

-2 \(\geq\) x \(\geq\) 0, x \(\leq\) 2

D.

x \(\geq\) -2, 0 \(\geq\) x \(\geq\) 2

Correct answer is C

No explanation has been provided for this answer.

1,555.

The graph above shows the cumulative frequency curve of the distribution of marks in a class test. What percentage of the students scored more than 20 marks?

A.

68%

B.

28%

C.

17%

D.

8%

Correct answer is B

\(\begin{array}{c|c} \text{class-marks(x)} & \text{(freq. (f)} & \text{cum. freq.}\\\hline 9 & &3.....3\\14 & & 6....3 + 6 = 9\\ 19 & & 9.....9 + 9 = 18\\ 24 & & 3.....18 + 3 = 21\\ 29 & & 2.....21 + 2 = 23\\ 34 & & 2.....23 + 2 = 25\\ & & 25\end{array}\)
% of students scoring more than 20 marks

= \(\frac{7}{25}\) x 100% = 28%