Answer: The correct answer is option C; 2(L-4) + 2L = 120
Step-by-step explanation: First of all we need to identify the variables and these are L, which is the length and W which is the width. The width is 4 less than the length of the rectangular rug. That means if the length is L, the width would be L - 4.
Also the perimeter has been given as 120. Note also that the perimeter is calculated as follows;
Perimeter = 2(L + W)
Substituting for the known values we now have;
120 = 2(L + L - 4)
120 = 2L + 2L - 8
Rearranging the right hand side now gives us
120 = 2L + (2L - 8)
120 = 2L + 2(L - 4)
(Note that this is the same as in option C, but the left hand side of the equation is now on the right hand side, and vice versa)
Answer: c
Step-by-step explanation:
Answer: The correct answer is option C; 2(L-4) + 2L = 120
Step-by-step explanation: First of all we need to identify the variables and these are L, which is the length and W which is the width. The width is 4 less than the length of the rectangular rug. That means if the length is L, the width would be L - 4.
Also the perimeter has been given as 120. Note also that the perimeter is calculated as follows;
Perimeter = 2(L + W)
Substituting for the known values we now have;
120 = 2(L + L - 4)
120 = 2L + 2L - 8
Rearranging the right hand side now gives us
120 = 2L + (2L - 8)
120 = 2L + 2(L - 4)
(Note that this is the same as in option C, but the left hand side of the equation is now on the right hand side, and vice versa)
