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Mathematics 1987 JAMB Past Questions

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16

The formula Q = 1.5 + 0.5n gives the cost Q(in Naira)of feeding n people for a week. Find (in kobo) the extra cost of feeding one additional person

  • A. 350k
  • B. 200k
  • C. 150k
  • D. 50k
View Answer & Discuss (10) JAMB 1987
17
If P varies inversely as V and V varies directly as R2, find the relationship between P and R given that R = 7 when P = 2
  • A. P = 98R2
  • B. PR2 = 98
  • C. P = \(\frac{1}{98R2
  • D. P = \(\frac{PR2}{98}\)
View Answer & Discuss (1) JAMB 1987
18

Make y the subject of the formula Z = x\(^2\) + \(\frac{1}{y^3}\)

  • A. y = \(\frac{1}{(Z - x^2)^3}\)
  • B. y = \(\frac{1}{(Z + x^2)^{\frac{1}{3}}}\)
  • C. y = \(\frac{1}{(Z - x^2)^{\frac{1}{3}}}\)
  • D. y = \(\frac{1}{\sqrt[3]{Z} - \sqrt[3]{x^2}}\)
View Answer & Discuss (6) JAMB 1987
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19
Find the values of m which make the following quadratic function a perfect square. x2 + 2(m + 1)x + m + 3
  • A. -1, 1
  • B. -1, 2
  • C. 1, -2
  • D. 2, -2
View Answer & Discuss (4) JAMB 1987
20
Factorize 62x + 1 + 7(6x) - 5
  • A. [3(6x) - 5][2(6x)m + 1]
  • B. [3(6x) + 5][2(6x) - 1]
  • C. [(6x) - 5][3(6x) + 1]
  • D. [2(6x) + 5][3(6x) - 1]
View Answer & Discuss (4) JAMB 1987
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