3 years ago

What are the coordinates of A’ after a 90° counterclockwise rotation about the origin.

Mathematics

1 answer:

I am Lyosha [343]3 years ago

8 0

Answer:

A' (- 1, - 5 )

Step-by-step explanation:

Under a counterclockwise rotation about the origin of 90°

a point (x, y ) → (- y, x ), then

A (- 5, 1 ) → A' (- 1, - 5 )

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Step-by-step explanation:

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Step-by-step explanation:

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3 years ago

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HELP

RUDIKE [14]

Answer:

Step-by-step explanation:

a₂ - a₁ = 20 - 4 = 16

a₃ - a₂ = 100 - 16 = 84

Since a₂ - a₁ ≠ a₃ - a₂, the sequence is not arithmetic.

a₂/a₁ = 20/4 = 5

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Since a₂/a₁ = a₃/a₂ = 5, the sequence is geometric with a common ratio of 5.

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