<h2>
Answer:</h2>
A. 5 positive x-tiles and 6 positive unit tiles on the left side; 4 positive x-tiles and 3 negative unit tiles on the right side
<h2>
Step-by-step explanation:</h2>
Left Side
5 positive x tiles: 5x
6 positive unit tiles: 6
Right Side
4 positive x tiles: 4x
3 negative unit tiles: -3
The right answer is -13/12.
The answer to the question is 21/3
Perimeter = a + b + c = 30
Area = 1/2 x a x b = 30
Multiples of 30: 2, 3, 5, 6, 10, 12, 15
For perimeter c = 30- (a+b)
C= sqrt( a^2 + b^2)
Using the possible combinations of the above:
5 and 12:
C = sqrt(5^2 + 12^2) = 13
5 + 12 + 13 = 30 for the perimeter
Area = 1/2 x 5 x 12 = 30
The sides are 5, 12 and 13 cm
