Set 4: Trigonometry

Explanation

Answer: B

Solve for $x$ : $5(x + 8) = 90$

✓ Correct

Detailed Explanation

Choice B is correct. 1. Start: $5(x + 8) = 90$ Divide by 5: $x + 8 = 18$ Subtract 8: $x = 10$ Therefore, $x = 10$ .

Key Steps:

•

Apply the appropriate mathematical formula

•

The correct answer is 10

Why others are wrong:

A: This would give an incorrect result. Choice A 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.

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

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