JAMB UTME - Mathematics - 1978

If y = 2x² + 9x - 35. Find the range of values for which y < 0.

Detalhes da Resposta

The vectors a and b are given in terms of two perpendicular units vectors i and j on a plane by a = 2i - 3j, b = -i + 2j. Find the magnitude of the vector a + 3b

Detalhes da Resposta

The angle of elevation of the top of a vertical tower from a point A on the ground is 60^o. From a point B, 2 units of distance further away from the foot of the tower, the angle of elevation of the tower is 45^o. Find the distance of A from the foot of the tower

Detalhes da Resposta

If a circular paper disc is trimmed in such a way that its circumference is reduced in the ratio 2:5, In what ratio is the surface area reduced?

Detalhes da Resposta

If the four interior angles of a quadrilateral are (p + 10)o, (p - 30)o, (2p - 450o, and (p + 15)o, then p is

Detalhes da Resposta

An arithmetic progression has first term 11 and fourth term 32. The sum of the first nine terms is

Detalhes da Resposta

Given that \(a*b = ab + a + b\) and that \(a ♦ b = a + b = 1\). Find an expression (not involving * or ♦) for (a*b) ♦ (a*c) if a, b, c, are real numbers and the operations on the right are ordinary addition and multiplication of numbers

Detalhes da Resposta

Add the same number to the numerator and denominator of \(\frac{3}{18}\). If the resulting fraction is \(\frac{1}{2}\), then the number added is

Detalhes da Resposta

Find the square root of 170 - 20\(\sqrt{30}\)

Detalhes da Resposta

In the Figure FD\\AC, the area of AEF = 6sq.cm. AE = 3cm, BC = 3cm, CD = 5cm, < BCD is an obtuse angle. Find the length of BD.

Detalhes da Resposta

The sum of \(3\frac{7}{8}\) and \(1\frac{1}{3}\) is less than the difference between \(\frac{3}{8}\) and \(1\frac{2}{3}\) by:

Detalhes da Resposta

Evaluate without using tables sin(-1290^o)

Detalhes da Resposta

Assuming log_e 4.4 = 1.4816 and log_e 7.7 = 2.0142, then the value of log_e \(\frac{7}{4}\) is

Detalhes da Resposta

A regular hexagon is constructed inside a circle of diameter 12cm. The area of the hexagon is

Detalhes da Resposta

The set of value of x and y which satisfies the equations x² - y - 1 = 0 and y - 2x + 2 = 0 is

Detalhes da Resposta

Simplify \(\frac{(a^2 - \frac{1}{a}) (a^{\frac{4}{3}} + a^{\frac{2}{3}})}{a^2 - \frac{1}{a}^2}\)

Detalhes da Resposta

Arrange \(\frac{3}{5}\),\(\frac{9}{16}\), \(\frac{34}{59}\) and \(\frac{71}{97}\) in ascending order of magnitude.

Detalhes da Resposta

In a geometric progression, the first term is 153 and the sixth term is \(\frac{17}{27}\). The sum of the first four terms is

Detalhes da Resposta

A force of 5 units acts on a particle in the direction to the east and another force of 4 units acts on the particle in the direction north-east. The resultants of the two forces is

Detalhes da Resposta

The number of telephone calls N between two cities A and B varies directly as the population P\(_{A}\), P\(_B\) respectively and inversely as the square of the distance D between A and B. Which of the following equations represents this relation?

Detalhes da Resposta

The quantity (x + y) is a factor of

Detalhes da Resposta

The locus of all points having a distance of 1 unit from each of the two fixed points a and b is

Detalhes da Resposta

In a soccer competition in one season, a club had scored the following goals: 2, 0, 3, 3, 2, 1, 4, 0, 0, 5, 1, 0, 2, 2, 1, 3, 1, 4, 1 and 1. The mean, median and mode are respectively

Detalhes da Resposta

Two triangles have the same areas if

Detalhes da Resposta

Five years ago, a father was 3 times as old as his son, now their combined ages amount to 110years. thus, the present age of the father is

Detalhes da Resposta

A canal has rectangular cross section of width10cm and breadth 1m. If water of uniform density 1 gm cm-3 flows through it at a constant speed of1000mm per minute, the adjacent sea is

Detalhes da Resposta

The minimum point on the curve y = x2 - 6x + 5 is at

Detalhes da Resposta

In the figure, 0 is the centre of the circle ABC, < CED = 30^o, < EDA = 40^o. What is the size of < ABC?

Detalhes da Resposta

In the figure, DE//BC: DB//FE: DE = 2cm, FC = 3cm, AE = 4cm. Determine the length of EC.

Detalhes da Resposta

If sec² \(\theta\) + tan² \(\theta\) = 3, then the angle \(\theta\) is equal to

Detalhes da Resposta

If x⁴ - kx³ + 10x² + 1x - 3 is divisible by (x - 1), and if when it is divided by (x + 2) the remainder is 27, find the constants k and 1

Detalhes da Resposta

Simplify \(\frac{a - b}{a + b}\) - \(\frac{a + b}{a - b}\)

Detalhes da Resposta

A rectangular picture 6cm by 8cm is enclosed by a frame \(\frac{1}{2}\)cm wide. Calculate the area of the frame

Detalhes da Resposta

A man runs a distance of 9km at a constant speed for the first 4 km and then 2 km\h faster for the rest of the distance. The whole run takes him one hour. His average speed for the first 4 km is

Detalhes da Resposta

A pyramid is constructed on a cuboid. The figure has

Detalhes da Resposta

A triangle has angles 30o, 15o and 135o. The side opposite to the angle 30o is length 6cm. The side opposite to the angle 135o is equal to

Detalhes da Resposta

What is the number whose logarithm to base 10 is 2.3482?

Detalhes da Resposta

Multiply (x + 3y + 5) by (2x2 + 5y + 2)

Detalhes da Resposta

Father reduced the quantity of food bought for the family by 10% when he found that the cost of living had increased 15%. Thus the fractional increase in the family food bill is now

Detalhes da Resposta

The smallest number such that when it is divided by 8 has a remainder of 6 and when it is divided by 9, has a remainder of 7 is

Detalhes da Resposta

A hollow right prism of equilateral triangular base of side 4cm is filled with water up to a certain height. If a sphere of radius \(\frac{1}{2}\)cm is immersed in the water, then the rise of water is

Detalhes da Resposta

If \(3x - \frac{1}{4})^{\frac{1}{2}} > \frac{1}{4} - x \), then the interval of values of x is

Detalhes da Resposta

If (25)^{x - 1} = 64(\(\frac{5}{2}\))⁶, then x has the value

Detalhes da Resposta

If x2 + 4 = 0, then x ?

Detalhes da Resposta

In the figure, AB is parallel to CD then x + y + z is

Detalhes da Resposta

A solid sphere of radius 3cm, a solid right cone of radius 3cm and height 12cm and a solid right circular cycular of radius 3cm and height 4cm.Which of the following statements is true?

Detalhes da Resposta

The sum of the progression is 1 + x + x2 + x3 + ......

Detalhes da Resposta

Without using tables, simplify \(\frac{1n \sqrt{216} - 1n \sqrt{125} - 1n\sqrt{8}}{2(1n3 - 1n5)}\)

Detalhes da Resposta