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anonymous
 one year ago
the perimeter of the square is 208 in. Find the value of x
anonymous
 one year ago
the perimeter of the square is 208 in. Find the value of x

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1439948377100:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0all 4 sides @Vocaloid and its 7x+3

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.3hint: 4(side) = perimeter

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0not getting you here?

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.3what is the length of one side? look at the diagram...

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.3right, and perimeter = ?

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.3good, so plug side and perimeter into the equation 4*(side) = perimeter

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.3not quite... you're forgetting the x

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.3nope, still not quite right...

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.34(7x+3) = 4*(7x) + 4*(3) = ?

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.3again, you're forgetting the x... 4*(7x) = __?

sammixboo
 one year ago
Best ResponseYou've already chosen the best response.1Well, since we know the perimeter is 208 inches, and one side is (7x +3) we can make an equation 208 = 4(7x+3) 208 is perimeter 4 is for all 4 sides (7x+3) is the length of one side. We gotta solve for x using this equation 208 = 4(7x+3), do you know how to do this?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.04*7=28 4*3=12 28+12=40 but that isnt it what am i doing wrong

sammixboo
 one year ago
Best ResponseYou've already chosen the best response.1Great, so our first step would be is to simplify 4(7x + 3), which is what @Vocaloid was trying to explain. Do you know what distributing is?

sammixboo
 one year ago
Best ResponseYou've already chosen the best response.1You are close, just forgetting the x. Distributing is when you take the number on the outside of the parenthesis (in this case our number is 4) and multiply it by all the numbers INSIDE the parenthesis (which is 7x and 3) So we have to multiply: 4 and 7x 4 and 3 We know that 4*3 is equal to 12, so we got that down. Now for 4*7x. We have to multiply the 4 and 7, but let's not forget about the x. After you multiplied 4 and 7, throw on the x on your answer. What is 4*7?

sammixboo
 one year ago
Best ResponseYou've already chosen the best response.1Right, now we add the x, so our answer for 4*7x is 28x! And we also know that: 4(7x + 3) = 28x + 12 Now let's continue on with our new equation, 208 = 28x + 12

sammixboo
 one year ago
Best ResponseYou've already chosen the best response.1Do you know what our next step is for solving 208 = 28x + 12?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.040 thats what i put up there

sammixboo
 one year ago
Best ResponseYou've already chosen the best response.1Not quite. We have to use the order of operations and all that jazz

sammixboo
 one year ago
Best ResponseYou've already chosen the best response.1We have to subtract 12 on both sides of the equation, since we are originally adding it. We have to isolate the x on one side of the equation, and this is our first step of solving this

sammixboo
 one year ago
Best ResponseYou've already chosen the best response.1So, we have 208  12 = 28x + 12  12 208  12 = 28x Can you tell me what is 208  12?

sammixboo
 one year ago
Best ResponseYou've already chosen the best response.1Ah, right :) No problem. x = 7
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