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yKpoI14uk [10]
3 years ago
9

I need some help please

Mathematics
1 answer:
Ket [755]3 years ago
8 0

Answer:

3\sqrt{5}

Step-by-step explanation:

View the distance as a hypotenuse of a triangle ΔABC (∠C = 90°).

Use Pythagorean theorem:

AB = y1 - y2 = 9 - 6 = 3

AC = x1 - x2 = 4 - (-2) = 6

Now calculate BC which is also the distance needed:

BC^{2} =AC^{2} +AB^{2}

BC^{2} = 6^{2} + 3^{2} = 45

BC = \sqrt{45} = \sqrt{3 * 3 * 5} (BC > 0)

BC = 3\sqrt{5}

Make me the brainliest ;)

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