MATHEMATICS
JAMB 2007 - Question 18
Mathematics 2007 JAMB Past Questions - Question 18: Make L the subject of the formula if d= √42W / 5L.
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B:
C:
D:
Correct Answer
A
Explanation
D =√42w/5L → d²/1 = 42w/5L → 5Ld² = 42w → L = 42w/5d²To make L the subject of the formula d = √(42W) / (5L), we can rearrange the equation to isolate L on one side.Starting with the given equation:d = √(42W) / (5L)Multiply both sides of the equation by 5L:5Ld = √(42W)Square both sides of the equation to eliminate the square root:(5Ld)² = (√(42W))²25L²d² = 42WDivide both sides of the equation by 25d²:L² = 42W / (25d²)Take the square root of both sides of the equation:√(L²) = √(42W / (25d²))Simplifying:L = √(42W) / (5d)Therefore, L is the subject of the formula when expressed as L = √(42W) / (5d).
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