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2248

Using the above graph, if 10ΒΊ < x < 60ΒΊ, what is the value of x for which sin x = cos x?

  • A. 0o
  • B. 20o
  • C. 30o
  • D. 45o
  • E. 50o
View Answer & Discuss WAEC 1989
2249

In the diagram above ABDE and FCDE are parallelograms. If |FC| = 12.2cm and the height |PC| = 4.0cm, calculate the area of the parallelogram ABDE.

  • A. 3.05cm2
  • B. 8.20cm2
  • C. 16.20cm2
  • D. 24.40cm2
  • E. 48.8cm2
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2250

In the diagram above, ∠SPR = P and ∠SQR = 2x. Find x in terms of P

  • A. x = p + 2
  • B. x = p - 2
  • C. x = p2
  • D. x = p/2
  • E. x = 2p
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2251

Instead of recording the number 1.23cm of the radius of a tube, a student recorded 1.32cm. Find the percentage of error, correct to one decimal place.

  • A. 6.8%
  • B. 7.3%
  • C. 9.6%
  • D. 14.4%
  • E. 15.4%
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2252

The angle of elevation of X from Y is 30o. If XY = 40m, how high is X above the level of Y?

  • A. 10m
  • B. 20m
  • C. 20√3m
  • D. 40m
  • E. 50m
View Answer & Discuss WAEC 1989
2253

Factorize the following expression; 2x2 + x – 15

  • A. (2x+5)(x-3)
  • B. (2x-5)(x+3)
  • C. (2x-5)(x-3)
  • D. (2x-3)(x+5)
  • E. (2x+5)(x+3)
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2254

The graph above is that of a quadratic function y = 2x2 – x – 6
The roots of the equation are

  • A. 1.5, 2
  • B. -1.5, 2
  • C. 1, -6
  • D. 1, 6
  • E. -1, 6
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2255

Evaluate \(\frac{0.009}{0.012}\), leaving your answer in standard form.

  • A. 7.5 x 102
  • B. 7.5 x 101
  • C. 7.5 x 10-1
  • D. 7.5 x 10-2
  • E. 7.5 x 10-3
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2256

Factorize 35 – 2b – b2

  • A. (35-2b)(b-1)
  • B. (7+b)(5-b)
  • C. (3+7b)(5-b)
  • D. (35-b)(3b+7)
  • E. (7+b)(5+b)
View Answer & Discuss WAEC 1989
2257

Evaluate, using logarithm tables \(\frac{5.34 \times 67.4}{2.7}\)

  • A. 1.332
  • B. 13.32
  • C. 133.2
  • D. 1332
  • E. 13.320
View Answer & Discuss WAEC 1989
2258

In the diagram O is the center of the circle, if ∠QRS = 62o, find the value of ∠SQR.

  • A. 14o
  • B. 28o
  • C. 31o
  • D. 45o
  • E. 90o
View Answer & Discuss WAEC 1989
2259

In the diagram above, TPS is a straight line, PQRS is a parallelogram with base QR and height 8cm. |QR| = 6cm and the area of triangle QST is 52cm2. Find the area of Ξ”QPT

  • A. 39cm2
  • B. 28cm2
  • C. 24cm2
  • D. 21cm2
  • E. 19cm2
View Answer & Discuss WAEC 1989
2260

If the second and fourth term of a G.P are 8 and 32 respectively,what is the sum of the first four terms?

  • A. 28
  • B. 40
  • C. 48
  • D. 60
  • E. 68
View Answer & Discuss WAEC 1989
2261

If 3loga + 5loga – 6loga = log64, what is a?

  • A. 4
  • B. 6
  • C. 8
  • D. 16
  • E. 32
View Answer & Discuss WAEC 1989
2262

The surnames of 40 children in a class arranged in alphabetical order. 16 of the surnames begins with O and 9 of the surname begins with A, 14, of the letters of the alphabet do not appear as the first letter of a surname

If more than one surname begins with a letter besides A and O, how may surnames begin with that letter

  • A. 2
  • B. 3
  • C. 4
  • D. 5
  • E. 6
View Answer & Discuss WAEC 1988
2263

The surnames of 40 children in a class arranged in alphabetical order. 16 of the surnames begins with O and 9 of the surname begins with A, 14, of the letters of the alphabet do not appear as the first letter of a surname

What is the probability that the surname of a child picked at random from the class begins with either O or A?

  • A. 5/8
  • B. 7/8
  • C. 9/16
  • D. 14/25
  • E. 39/40
View Answer & Discuss WAEC 1988
2264

The histogram below shows the number of candidates, in thousands, obtaining given ranges of marks in a State examination. How many candidates scored at most 30%?

  • A. 15,000
  • B. 20,000
  • C. 25,000
  • D. 35,000
  • E. 60,000
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2265

The histogram below shows the number of candidates, in thousands, obtaining given ranges of marks in a State examination. Find the total number of candidates that sat for the examination

  • A. 80,000
  • B. 120,000
  • C. 250,000
  • D. 260,000
  • E. 270,000
View Answer & Discuss WAEC 1988
2266

If Q = (all perfect squares less than 30) and P = (all odd numbers from 1 to 10). Find Q ∩ P.

  • A. (1, 4, 9, 16, 25)
  • B. (1, 3, 4, 5, 7, 9, 16, 25)
  • C. (1, 3, 5, 7, 9)
  • D. (1, 9)
  • E. Ξ¦
View Answer & Discuss WAEC 1988
2267

Cotonou and Niamey are on the same line of longitude and Niamey is 7o north of Cotonou. If the radius of the earth is 6400km, how far is Niamey north of Cotonou along the line of longitude, correct to the nearest kilometer? [Take Ο€ = 22/7]

  • A. 391km
  • B. 503km
  • C. 782km
  • D. 1006km
  • E. 2012km
View Answer & Discuss WAEC 1988
2268

In the diagram above, PR is perpendicular from P to QS, PQ = 2cm, QR = 1cm and PR = RS. what is the size of the angle QPS?

  • A. 135o
  • B. 105o
  • C. 90o
  • D. 75o
  • E. 60o
View Answer & Discuss WAEC 1988