Algebra 2 Question, tagged in the link

Mathematics

1 answer:

deff fn [24]3 years ago

7 0

The answer to the question

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Factor completely 3x^2+9x-3<br>3(x^2+3)<br>3(x^2+3-1)<br>3x(x^2+3x-1)<br>prime

Firdavs [7]

Answer:

Answer from the answer data to choose from

Factor completely

$3\left(x+\dfrac{3-\sqrt{13}}{2}\right)\left(x+\dfrac{3+\sqrt{13}}{2}\right)$

Step-by-step explanation:

$3x^2+9x-3=(3)(x^2)+(3)(3x)-(3)(1)\\\\=(3)(x^2+3x-1)\\\\\text{For}\ x^2+3x-1\ \text{use the quadratic formula}\\\\x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}\\\\x^2+3x-1\to a=1,\ b=3,\ c=-1\\\\x=\dfrac{-3\pm\sqrt{3^2-4(1)(-1)}}{2(1)}=\dfrac{-3\pm\sqrt{9+4}}{2}=\dfrac{-3\pm\sqrt{13}}{2}=-\dfrac{3\pm\sqrt{13}}{2}\\\\3x^2+9x-3=3\left(x+\dfrac{3-\sqrt{13}}{2}\right)\left(x+\dfrac{3+\sqrt{13}}{2}\right)$

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3 years ago

(1 pt) Lucas cut a board that is ft long and ft wide. What is the area of the board? Express your answer in simplest form. A. sq

lions [1.4K]

B.is the answers :)(:

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3 years ago

Svetlana's hair is 4 centimeters long. her hair grows 1.5 centimeters per month. svetlana wants her hair to grow so that it is a

mamaluj [8]

Y=1.5m+4 or 7=1.5m+4

7=1.5(2)+4
7=3+4

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3 years ago

ОА.

horsena [70]

Answer:

a 90° counterclockwise rotation about the origin, and then a dilation by a scale factor of 2

Step-by-step explanation:

At Image I, we have vertex at point (3,-2), and the length of the left side is of 1 unit(from -2 to -3).

In the larger figure, this length is of 2 units, so the dilation has a scale factor of 2 units. The rotation, due to the coordinates changing, is of 90º counterclockwise(if it was across the x-axis, only the y coordinate would change, but on image II, both coordinates change).

So the correct answer is:

a 90° counterclockwise rotation about the origin, and then a dilation by a scale factor of 2

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3 years ago

What is the volume of a cylinder with a diameter of 10 and a height of 4

Lerok [7]

Answer:

V = 314.16

Step-by-step explanation:

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3 years ago