passwella.
Menu

WAEC Further Mathematics 2019 Question 26

Question 26

Indices and Logarithms

Solve, correct to three significant figures, (0.3)x = (0.5)8.

  1. A.4.61
  2. B.4.606
  3. C.0.461
  4. D.0.0130
Show the answer and explanation

Answer: A (4.61)

Explanation

x = 8 log 0.5 / log 0.3 = 8(−0.3010)/(−0.5229) ≈ 4.606, which is 4.61 to three significant figures.