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AlladinOne [14]
3 years ago
6

Please show your work! I have 3 more of these, and I want to be able to do them by myself.

Mathematics
1 answer:
Radda [10]3 years ago
3 0

Answer:

Step-by-step explanation:

We group the number 5:

5(x² + 3x + 2.25)

Now inside the brackets we'll take the square root of the coefficient of the x and the square root of the last number, then remove the square from the x and write it as a sum:

5(x+1.5)²

What's the idea behind this?

Well, remember that when you have something in the form:

(a+b)²

It actually means:

a² + 2ab + b²

In our case a was x, and b was 2.25. For bringing it into the shorter form we have to take the square root of a and b.

Sorry if you don't understand. Tell me if you need help to get the xoncept better.

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A)
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NEED HELP ASAP!!!!!
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Part A:

An isometric transformation is a type of transformation where the original shape and size of the pre-image is not altered in the image.

To show that the translation was an isometric transformation, we show that the distance between any two points in the pre-image is equal to the distance between the corresponding points in the image.

Consuder, line AB, the distance between point A and point B is given by:

d= \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}  \\  \\ = \sqrt{(-1-(-6))^2+(0-0)^2} = \sqrt{(-1+6)^2+0^2}  \\  \\ = \sqrt{5^2+0} = \sqrt{25} =5

The distance between point A' and point B' in the image is given by:

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Similarly checking other points of the pre-image against the corresponding points of the image shows that the size of the pre-image is preserved in the image.



Part 2:

The translation that maps the triangle ABC onto its image are:
Triangle ABC was shifted 4 units to the right.
Triangle ABC was shifted 4 units up.
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