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Stella [2.4K]
3 years ago
8

What is the approximate distance between the points (-3, -4) and (-8, 1) on a coordinate grid? A. 11.40 units B. 7.07 units C. 3

.16 units D. 12.08 units
Mathematics
1 answer:
Blizzard [7]3 years ago
6 0
The formula of the distance between two points:

A(x_A;\ y_A);\ B(x_B;\ y_B)\\\\|AB|=\sqrt{(x_B-x_A)^2+(y_B-y_A)^2}

We have:

A(-3;-4);\ B(-8;\ 1)

substitute:

|AB|=\sqrt{(-8-(-3))^2+(1-(-4))^2}=\sqrt{(-8+3)^2+(1+4)^2}\\\\=\sqrt{(-5)^2+5^2}=\sqrt{25+25}=\sqrt{25\cdot2}=\sqrt{25}\cdot\sqrt2\\\\=\boxed{5\sqrt2\approx7.07}

Answer: B. 7.07
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