Solve, correct to three significant figures, (0.3)\(^x\) = (0,5)\(^8\)
FURTHER MATHEMATICS
WAEC 2019
Solve, correct to three significant figures, (0.3)\(^x\) = (0,5)\(^8\)
- A. 4.61
- B. 4.606
- C. 0.461
- D. 0.0130
Correct Answer: B. 4.606
Explanation
(0,3)\(^x\) = (0.5)\(^8\)
xlog 0,3 = 9 log 0.5
x = \(\frac{8 \log 0.5}{\log 0.3}\)
= 4.606
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