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crimeas [40]
3 years ago
5

Kylie explained that (negative 4 x + 9) squared will result in a difference of squares because (negative 4 x + 9) squared = (neg

ative 4 x) squared + (9) squared = 16 x squared + 81. Which statement best describes Kylie’s explanation?
Mathematics
2 answers:
agasfer [191]3 years ago
6 0

Answer:

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

just passed on edge-nuity

Step-by-step explanation:

hichkok12 [17]3 years ago
4 0

Answer:

Kyle did not solve the question correctly

Step-by-step explanation:

The equation (-4x +9)^2 is a perfect square trinomial.

A typical example of a perfect square trinomial is (x +y) ^2 = x^2 + 2xy + y^2

Therefore, (-4x + 9)

= (-4x)^2 + 2(-4x)(9) + (9)^2

= 16x^2 + 2(-36x) + 81

= 16x^2 - 72x +81

The result Kyle gave was 16x^2 + 81. This is incorrect.

Therefore, Kyle did not solve the question correctly

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Answer:

Step-by-step explanation:

5.25 - 2.625 = 2.625 inches

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Need help with this
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B) If fencing costs $2.50/yd, determine the<br> costs of building the fence.
siniylev [52]
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Which steps transform the graph of
vitfil [10]

Answer:

The correct option is the last one.

Step-by-step explanation:

To transform the graph of y = x ^ 2 into y = -2(x - 2) ^ 2 + 2 the following steps are fulfilled:

1) Move the graph 2 units to the right:

Let y = f (x-2) then y =(x-2) ^ 2 Notice that the cut point has been moved to x = 2.

2) Reflect on the x axis:

To reflect a graph on the x-axis we do y = -f(x) Then f (x) = -(x-2) ^ 2

3) Stretch according to factor 2.

For this we do y = 2f(x)

Then we have f(x) = -2 (x-2) ^ 2

4) Move up the graph in two units:

We do y = f(x) +2

Then y = -2(x-2) ^ 2 +2.

These steps coincide with those listed in the last option. Therefore the correct option is the last one.

"Translate 2 units on the right, reflect on the x-axis, stretch according to the factor 2 and translate 2 units"

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