Question

Find the distance between point A and point C. Round to the nearest tenth.
A) 9.4
B) 12.2
C) 7.8
D) 8.6

Answer 1

Answer:

D) 8.6

Step-by-step explanation:

The formula of a distance between two points:

$\boxed{d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}}$

We have the points A(7, 5) and C(0, 10). Substitute:

$d=\sqrt{(0-7)^2+(10-5)^2}=\sqrt{(-7)^2+5^2}=\sqrt{49+25}=\sqrt{74}\\\\\sqrt{74}\approx8.6$