Arectangular picture frame has a width of 9 cm and a length of x cm. which expression represents the perimeter of the picture frame? 2x 9 2x 18 x 9 2(x 18)

2x+18

Step-by-step explanation:

this is a rectangular prism which will mean their are four sides (two pairs perpendicular to each other) so we can automatically assume the width (9) can be multiplied by 2 which gives you 18. If the length is x then we know we have to do the same thing and multiply 2 by x but since we don't know the exact amount we can just keep it at 2*x  which is the same as 2x.

We are not finding the answer but we are looking for the math problem so this will give you the 2x+18

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step-by-step explanation:

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answer: 177/8

step-by-step explanation: