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Dima020 [189]
4 years ago
12

Kylie explained that (–4x + 9)2 will result in a difference of squares because (–4x + 9)2 = (–4x)2 + (9)2 = 16x2 + 81. Which sta

tement best describes Kylie’s explanation?
A=Kylie is correct.
B=Kylie correctly understood that it is a difference of squares, but she did not determine the product correctly.
C=Kylie did not understand that this is a perfect square trinomial, and she did not determine the product correctly.
D=Kylie determined the product correctly, but she did not understand that this is a perfect square trinomial.
Mathematics
2 answers:
Serjik [45]4 years ago
8 0
The correct product should have been:
<span>(–4x + 9)2 = </span>(-4x)2 + 2(-4x)(9) + 9^2 = 16x6 - 72x +81
The result is a trinomial and not a binomial nor a difference of two squares.

So, the answer is:
C = Kylie did not understand that this is a perfect square trinomial, and she did not determine the product correctly.


Dmitry [639]4 years ago
7 0

Answer: C

Step-by-step explanation: Kyle is not correct because it is not a diference of 2 squares, but a perfect square trinomial.

(-4x + 9)² = (9 - 4x)² = 9² - 2.9.4x + (4x)² = 81 - 72x + 16x²

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Using proportions, it is found that each of the 6 people got $0.5.

<h3>Proportions:</h3>
  • This question is solved by <em>proportions</em>, using a rule of three.
  • $3.00 is shared between 6 people, which are Larry, Curly, Moe, Alvin, Simon and Theodore. How much did each people(1 person) get?

The <em>rule of three</em> is:

$3.00 - 6 people

$x - 1 person

Applying cross multiplication:

6x = 3

x = \frac{3}{6}

x = 0.5

Each of the 6 people got $0.5.

To learn more about proportions, you can take a look at brainly.com/question/24372153

7 0
3 years ago
!!!!How many solutions does the equation have?
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No solution bc the equations aren't equal to each other
3 0
3 years ago
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Which number line shows the solution to 11x + 14 &lt; –8?
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Answer:

positive 11x+ positive 14 to the right is greater than negative 8 to the left

Step-by-step explanation:

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3 years ago
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How to factorize -3pa-9b-18pc
Fed [463]
-3pa - 9b - 18pc

For starters, you know that you can't take away any of the letters from the equation because none of the three have the exact same letter; however, they all have something they can be divided by and that is -3. 

It would be -3 instead of just 3 because the equation itself starts with a negative. (you could probably do it anyways with just 3, but you'd end up taking out a negative one, anyways, so what's the point?)

Now, you would have: -3 ( pa + 3b + 6pc )

That is truly all you can take out. So, that would end up being your answer since all you can really do is simplify.  
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4 years ago
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