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4. A rectangle has length 3x + 4 feet. Its width is 7x feet. What is an expression in simplest form for the perimeter of the rectangle?​

Sagot :

Answer:

2(3x+4)=P(perimeter)

Step-by-step explanation:

what I did was:

  1. write out the expression 3x+4+7x
  2. combine like terms in this case it's 3x and 7x
  3. 10x+4
  4. put it in parentheses and put a 2 on the left side indicating distributive property for the equation
  5. it should look like this so far 2(10x+4)
  6. and you need to add what you are trying to find, so add =p to the right of the equation
  7. equation should look like this: 2(10x+4)=P
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