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2 years ago

Use the diagram to answer the question that follows.

Mathematics

1 answer:

SashulF [63]2 years ago

7 0

Answer:

Step-by-step explanation:

So we are at C:

We need to find the dilation:

First we add 4 to x (meaning we move the point C 4 points to the right)

Then we need to subtract 10 to y (meaning we move the point C 10 points downwards)

This will give you your point:

Which is B

Hope this helps!

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Write the equation of a circle with a center at (-2,-10) and a radius of 1.2.

MrRissso [65]

Answer:

The correct option is the letter "C", $(x + 2)^2 + (y + 10)^2 = 1.44$ .

Step-by-step explanation:

The standard form for a circle's equation has the following structure:

$(x - x_c)^2 + (y - y_c)^2 = r^2$

Where $(x_c,y_c)$ are the coordinates of the center of the circle and $r$ is the radius. Applying the data from the problem we have:

$(x - x_c)^2 + (y - y_c)^2 = r^2\\\[[x - (-2)]^2+ [y - (-10)]^2 = (1.2)^2\\(x + 2)^2 + (y + 10)^2 = 1.44$

Therefore the correct answer is the letter "C", $(x + 2)^2 + (y + 10)^2 = 1.44$ .

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