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2 years ago

If A = (7,9) and B = (3 , 12) what is the length of AB

Mathematics

1 answer:

V125BC [204]2 years ago

7 0

Answer:

AB = 5 units

Step-by-step explanation:

Calculate the length using the distance formula

d = $\sqrt{(x_{2}-x_{1})^2+ (y_{2}-y_{1})^2$

with (x₁, y₁ ) = A(7, 9) and (x₂, y₂ ) = B(3, 12)

AB = $\sqrt{(3-7)^2+(12-9)^2}$

= $\sqrt{(-4)^2+3^2}$

= $\sqrt{16+9}$

= $\sqrt{25}$

= 5

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