Set 1: Trigonometry

Explanation

Answer: D

Solve for $x$ : $5(x + 5) = 50$

✓ Correct

Detailed Explanation

Choice D is correct. 1. Start: $5(x + 5) = 50$ Divide by 5: $x + 5 = 10$ Subtract 5: $x = 5$ Therefore, $x = 5$ .

Key Steps:

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Apply the appropriate mathematical formula

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The correct answer is 5

Why others are wrong:

A: This would give an incorrect result. Choice A is incorrect and may result from a calculation error.

B: This would give an incorrect result. Choice B is incorrect and may result from a calculation error.

C: This would give an incorrect result. Choice C is incorrect and may result from a calculation error.

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