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horsena [70]
2 years ago
13

Perform the operation. (-2x^2 – 8x + 3) + (-9x^2 + x + 3)

Mathematics
2 answers:
galina1969 [7]2 years ago
5 0

Answer:

-11x^{2} + 7x + 6

Step-by-step explanation:

ludmilkaskok [199]2 years ago
3 0
The answer is: - 11x^2 - 7x + 6
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zhenek [66]

Julia has determined that CE is perpendicular bisector of AB. The next step of a valid proof would be: <em>B. AC = BC based on the </em><em>perpendicular bisector theorem</em>.

<h3>What is the Perpendicular Bisector Theorem?</h3>

The perpendicular bisector theorem states that if a point is located on a segment (perpendicular bisector) that divides another segment into two halves, then it is equidistant from the two endpoints of the segment that is divided.

Thus, since Julia has determined that CE is perpendicular bisector of AB, therefore the next step of a valid proof would be: <em>B. AC = BC based on the </em><em>perpendicular bisector theorem</em>.

Learn more about the perpendicular bisector theorem on:

brainly.com/question/2035717

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2 years ago
Why do we use letters in mathematics?
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We use letters to substitute for unknown numbers. I hope this helps. :)
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nordsb [41]
3.59x+1.49y=13.00
that should help
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2 years ago
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two angles are complementary.one angles measure is 79 degrees. What is the measure of the other angle
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Complementary means the two angles add up to 90 degrees. Do 90 - 79 to find the other angle. 

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The answer is 6 cm. The mid segment is half of BC
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