I'm being Timed please hurry. Triangle TUV is rotated as shown on the coordinate grid below, using the origin as the center of rotation. On a coordinate plane, triangle T U V has points (1, negative 2), (7, negative 2), (3, negative 3). Triangle T prime U prime V prime has points (2, negative 0.5), (6.2, 3.8), (4, 0). Which describes the rotation that took place?

A. a 90° clockwise rotation
B. a 90° counterclockwise rotation
C. 45° clockwise rotation
D. 45° counterclockwise rotation

D. 45 degree counterclockwise rotation

Step-by-step explanation: :              

The original image is triangle TUV and it has been rotated counter clockwise to form triangle T'U'V' using the origin as the center of rotation. . The rotation is 45 degrees rotation.                                

Hence, option B is correct.

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step-by-step explanation:

given perimeter: 28cm

length: 9cm

atp,

2(l+w)=p of the reactangle

2(9+x)=28

18+2x=28

2x=28-18

x=10/2

x=5

therefore width is 5 cm