Which of the following values for m makes the inequality m−−√+17<24

true?
49
49

48
48

50
50

64

1 answer

To solve the inequality \( \sqrt{m} + 17 < 24 \), we will first isolate \( \sqrt{m} \).

  1. Subtract 17 from both sides:

    \[ \sqrt{m} < 24 - 17 \]

    This simplifies to:

    \[ \sqrt{m} < 7 \]

  2. Next, we square both sides to eliminate the square root (keeping in mind that squaring both sides is valid since both sides are positive):

    \[ m < 7^2 \]

    This gives us:

    \[ m < 49 \]

Now, we will test the given values:

  1. For \( m = 49 \): \[ \sqrt{49} + 17 = 7 + 17 = 24 \quad \text{(not less than 24)} \]

  2. For \( m = 48 \): \[ \sqrt{48} + 17 \approx 6.93 + 17 \approx 23.93 < 24 \quad \text{(true)} \]

  3. For \( m = 50 \): \[ \sqrt{50} + 17 \approx 7.07 + 17 \approx 24.07 \quad \text{(not less than 24)} \]

  4. For \( m = 64 \): \[ \sqrt{64} + 17 = 8 + 17 = 25 \quad \text{(not less than 24)} \]

Based on the tests, the only value for \( m \) that makes the inequality \( \sqrt{m} + 17 < 24 \) true is:

\[ \boxed{48} \]