lily3934
13.03.2021 •
Mathematics
Una persona camina 7 kilómetros hacia el norte, después 3 kilómetros hacia el este y, luego, 3 kilómetros hacia el sur. ¿A qué distancia está del punto de partida
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Ответ:
La persona está a 5 kilómetros con respecto al punto de partida.
Step-by-step explanation:
Considérese que la dirección norte coincide con el semieje +y y que la dirección este coincide con el semieje +x. A continuación, obtenemos las formas vectoriales equivalentes de cada afirmación:
(i) Una persona camina 7 kilómetros hacia el norte:
(ii) Después 3 kilómetros hacia el este:
(iii) Y luego, 3 kilómetros hacia el sur:
El vector resultante de desplazamiento se construye a partir de la siguiente suma de vectores:
(1)
Asumiendo que la distancia coincide con el desplazamiento resultante, calculamos la distancia con respecto al punto de partida mediante el Teorema de Pitágoras:
La persona está a 5 kilómetros con respecto al punto de partida.
Ответ:
First, find the slope,m, y2-y1/x2-x1. Once you find the slope, find the y-intercept, b. To find b, plug in the slope and x and y. The slope intercept form is: y=-7x-20