Set 5: Trigonometry

Explanation

Answer: D

If $9x + 14 = 77$ , what is the value of $x$ ?

✓ Correct

Detailed Explanation

Choice D is correct. 1. Start: $9x + 14 = 77$ Subtract 14: $9x = 63$ Divide by 9: $x = 7$ Therefore, $x = 7$ .

Key Steps:

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Apply the appropriate mathematical formula

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The correct answer is 7

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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