The width of a rectangle measures (5.5d+9.7f)(5.5d+9.7f) centimeters, and its length measures (5.1d-3.5f)(5.1d−3.5f) centimeters. Which expression represents the perimeter, in centimeters, of the rectangle? A. 21.2d+12.4 B. 9.7−7f+21.2d C. 21.2d+12.4f D. 6.2+10.6d

C. 21.2d+12.4f

Step-by-step explanation:

Given, The width of a rectangle measures  centimeters, and its length measures centimeters.  

Perimeter of rectangle = 2 (length + breadth)

Hence, the correct option is C. 21.2d+12.4f .

the answer is a

step-by-step explanation:

answer: the answer is 30 miles per hour.

ft/s -> mphmph = ft/s 1.466667mph = 44 divided by 1.466667mph = 30.00000

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