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frutty [35]
3 years ago
13

If P=(2,-1), find the image of P under the following rotation. 90 counter about the origin. Enter the number that belongs in the

green box.

Mathematics
2 answers:
Eddi Din [679]3 years ago
4 0

Answer:

(1, 2 )

Step-by-step explanation:

Under a counterclockwise rotation about the origin of 90°

a point (x, y ) → (- y, x ) , then

P (2, - 1 ) → (1, 2 )

Daniel [21]3 years ago
3 0

Step-by-step explanation:

If the image move 90⁰ counterclockwise then it will become (-2, -1).

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Answer:

(b) -m, m + 3

Step-by-step explanation:

x² − 3x − m(m + 3) = 0

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(x − 3/2)² = m(m + 3) + 9/4

(x − 3/2)² = m² + 3m + 9/4

(x − 3/2)² = (m + 3/2)²

x − 3/2 = ±(m + 3/2)

x − 3/2 = m + 3/2, -m − 3/2

x = m + 3, -m

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Add '-5x' to each side of the equation.
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