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Answer:
<em>P= 5.5 cm</em>
Step-by-step explanation:
<u>The Perimeter of Plane Shapes</u>
If we are given a plane shape, the perimeter is the measurement of the boundary of it. In case the shape is made of lines, the perimeter is the sum of the lengths of all of them.
We are given an irregular shape, we only need to add all the sides. But we don't have all the individual sides. Let's write the expression for the perimeter.
P=AE+ED+DC+CB+BA
We have: AE + DC = 1 1/5 cm, AB = 1 3/4 cm, DE = 1 1/4 cm, and BC = 1 3/10 cm. Note we don't have AE or DC, but we have their sum, so
P=AE+DC+ED+CB+BA
Recall that AB=BA, the order of the letters is not important. The perimeter is
We add the integer parts separate from the fractions
Now we use the common denominator (Least Common Multiple or LCM ) which is 20:
Operating
Simplifying
Hello!
-4x - 10x
When subtracting terms with the same variable degree (x), we can simply subtract the coefficients from each other:
-4 - 10 = -14
We can add on the x variable once we have done this:
-14x. Therefore, B is the correct answer.