QUESTION IMAGE
Question
find the distance between the points (8, 7) and (1, 8). write your answer as a whole number or a fully simplified radical expression. do not round.
Step1: Identificar las coordenadas
Sea $(x_1,y_1)=(8,7)$ y $(x_2,y_2)=(1,8)$.
Step2: Aplicar la fórmula de distancia
La fórmula de distancia entre dos puntos $(x_1,y_1)$ y $(x_2,y_2)$ es $d = \sqrt{(x_2 - x_1)^2+(y_2 - y_1)^2}$. Sustituyendo los valores, tenemos $d=\sqrt{(1 - 8)^2+(8 - 7)^2}$.
Step3: Calcular los valores internos
$(1 - 8)^2=(-7)^2 = 49$ y $(8 - 7)^2=1^2 = 1$. Entonces $d=\sqrt{49 + 1}$.
Step4: Simplificar la expresión
$d=\sqrt{50}=\sqrt{25\times2}=5\sqrt{2}$.
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$5\sqrt{2}$ unidades