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27 September, 10:55

chanice drives her scooter 7 km north she stops for lunch and then drives 5 km east what distance did she cover. what was her displacment?

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  1. 27 September, 11:59
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    Use pythagorean's theorem for this, with 7 as a and 5 as b. pythagorean's theorem says that a^2 + b^2 = c^2, so 7^2 * 5^2 = c^2. this gives you 49 + 25 = c^2, so 74 = c^2. c = sqrt 74, which is approximately 8.60 km
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