PSAT Math Grid-Ins Question 104: Answer and Explanation
Question: 104
If 5x2 = 125, what could be the value of 5x?
Correct Answer: 25
Explanation:
25
The question asks for a possible value of 5x. Take the equation 5x2 = 125 and divide both sides by 5 to get x2 = 25. Take the square root of both sides to get x = ±5. The possible values of 5x are 5(5) = 25 and 5(–5) = –25. Only positive values can be gridded in, so the correct answer is 25.
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