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aev [14]
2 years ago
6

•A ( -3,-4)

Mathematics
1 answer:
oksian1 [2.3K]2 years ago
3 0

Answer:

B.) 10  

Step-by-step explanation:

You could use the distance formula to calculate the length of AB, I prefer a visual approach, because it requires less memorization.

Draw a vertical line from B and a horizontal line from A until they intersect at D (5, 4).

Then you have a right triangle ABD, and you can use Pythagoras' theorem to calculate AB.

\begin{array}{rcl}AB^{2} & = & AD^{2} + BD^{2}\\& = & 8^{2} + 6^{2}\\ & = & 64 + 36\\& = & 100\\AB& = & \sqrt{100}\\&= & \mathbf{10}\\\end{array}

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