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Andreas93 [3]
4 years ago
12

Type the correct answer in each box.

Mathematics
2 answers:
Marianna [84]4 years ago
6 0

Answer:

1. (3x² - 7x + 14) + (5x² + 4x -6) = B

2. (2x² - 5x - 3) + (-10x² + 2x + 7) = A

3. (12x² - 2x - 13) + (-4x² + 5x + 9) = C

Step-by-step explanation:

(3x² - 7x + 14) + (5x² + 4x -6)    (We can simplify this since there are like terms)

= 8x² - 3x + 8    (This is denoted in option B so the answer to the first question is B)

(2x² - 5x - 3) + (-10x² + 2x + 7)    (We can simplify this since there are like terms)

= -8x² - 3x + 4    (This is denoted in option A so the answer to the second question is A)

(12x² - 2x - 13) + (-4x² + 5x + 9)    (We can simplify this since there are like terms)

= 8x² + 3x - 4    (This is denoted in option C so the answer to the third question is C)

Zolol [24]4 years ago
3 0
The answer in order
B
A
C
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Step-by-step explanation:

<h3>4.</h3>

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<h3>5.</h3>

The marked congruences are for two sides and a non-included angle. There is no SSA postulate for proving congruence. (In fact, there are two different possible triangles that have the given dimensions. This can be seen in the fact that the given angle is opposite the shortest of the given sides.)

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<h3>6.</h3>

The first statement/reason is always the list of "given" statements.

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2. . . . . vertical angles are congruent

3. . . . . ASA postulate

4. . . . . CPCTC

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