Select all of the expressions that correctly calculate the perimeter of the following shape. 10 300 + 1007 40 + 2071 80 + 207 120 + 207 10 + 10 + 107 + 10 + 10 + 10

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step-by-step explanation:

4th option is correct xy=-10

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step-by-step explanation:

exa:

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3+11

14

step-by-step explanation:

from this example, we can see that subtracting with integers is the same as adding the opposite. we can solve using a number line or by using the saying "keep, change, change" to us solve. it is important to remember that we can subtract a negative and end up with a larger number than we started with.