can someone give me a good explanation of scientific notation. simple but smart. i’m in algebra 1 honors

Mathematics

1 answer:

Kaylis [27]3 years ago

3 0

Answer:

Scientific notation is a way of expressing numbers that are too large or too small to be conveniently written in decimal form. It may be referred to as scientific form or standard index form, or standard form in the UK.

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The point (x,y) is rotated 180 degrees counterclockwise about the origin. Write a rule to determine the coordinate of the image

bazaltina [42]

Answer:

(x, y) ⇒ (-x, -y)

Step-by-step explanation:

There are a couple of ways you can go at this.

1) Rotation by 180° in either direction is the same as reflection across the origin. That reflection is identical to reflection across both the x- and y-axes, in either order, so negates both coordinates. The transformation rule is ...

(x, y) ⇒ (-x, -y)

2) The rule for a general rotation by angle α is ...

(x, y) ⇒ (x·cos(α) -y·sin(α), x·sin(α) +y·cos(α))

For α = 180°, sin(α) = 0 and cos(α) = -1. This makes the rule for rotation by 180° be ...

(x, y) ⇒ (-x, -y)

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marusya05 [52]

Answer:

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