Answer:
12cm
Step-by-step explanation:
1. Define the variable:
x = length of the rectangle
2x = width of the rectangle
2. Set the equation:
x + 2x is half of the rectangle
2(x + 2x) is the perimeter
So,
2(x + 2x) = 36
2x + 4x = 36
6x = 36
x = 6
Since x is the length, multiply it by 2 to find the width.
2x = 12
Answer:
45 is the right answer
Step-by-step explanation:
Answer:
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Step-by-step explanation:
the inverse of -18 is +18. +18 is less than 19
<span><span> x =(11-√137)/2=-0.352</span><span> x =(11+√137)/2=11.352</span></span>