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nexus9112 [7]
3 years ago
14

What is the missing coordinate?

Mathematics
1 answer:
ololo11 [35]3 years ago
4 0
The missing X value equals 5. The triangle was dilated by a scale factor of 3 and 15 / 3 = 5.
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5. Mis the midpoint of CD. C has coordinates (-1,-1) and
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Answer/Step-by-step Explanation:

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5. Given M(3, 5) as midpoint of CD, and C(-1, -1),

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D(?, ?) = (x_1, y_1)

M(3, 5) = (\frac{x_1 +(-1)}{2}, \frac{y_1 +(-1)}{2})

Rewrite the equation to find the coordinates of D

3 = \frac{x_1 - 1}{2} and 5 = \frac{y_1 - 1}{2}

Solve for each:

3 = \frac{x_1 - 1}{2}

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