6

Set 4: Trigonometry

Explanation

Answer: C

Solve for xx: 5(x+7)=605(x + 7) = 60

A.

15

B.

10

C.

5

✓ Correct
D.

2

Detailed Explanation

Choice C is correct. 1. Start: 5(x+7)=605(x + 7) = 60 Divide by 5: x+7=12x + 7 = 12 Subtract 7: x=5x = 5 Therefore, x=5x = 5.

Key Steps:

Apply the appropriate mathematical formula

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

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