2 years ago

Number 9 please ! Germotry help

Mathematics

1 answer:

vovangra [49]2 years ago

6 0

9514 1404 393

Answer:

E = (-14, 15)

Step-by-step explanation:

The midpoint relation is ...

M = (D +E)/2

2M = D +E . . . . multiply by 2

E = 2M -D . . . . subtract D

E = 2(-4, 8) -(6, 1) = (-8-6, 16 -1)

E = (-14, 15)

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2 years ago

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3 years ago

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kirza4 [7]

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Step-by-step explanation:

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Subtracting the area of 4 four triangles from the area of the square will give you the area of the required shape.

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$= {8}^{2} - \frac{1}{2} \times 3 \times 6 - \frac{1}{2} \times 5 \times 2 - \frac{1}{2} \times 2 \times 3\\ - \frac{1}{2} \times 2 \times 5 \\ \\ = 64 - 3 \times 3 - 5 \times 1 - 1\times 3 - 1 \times 5 \\ \\ = 64 - 9 - 5 - 3 - 5 \\ \\ = 64 - 22 \\ = 42 \: {units}^{2}$

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