Answer:
n = 18
Step-by-step explanation:
Corresponding parts of similar triangles are in same ratio

The answer is A. 7.8 cm3. We know that 1 mm=0.1 cm. So 1 mm3=0.001 cm3. Then the 7800 mm3 equals to 7.8 cm3.
3 yards = 36*3 = 108 inches
-> total of width and length = 108/2 = 54 inches, because perimeter = 2*total of length and width.
=> length + width = 54 inches
and 6 ≤ width <span>≤ 12
=> all possible dimensions are:
6x48
7x47
8x46
9x45
10x44
11x43
12x42</span>
Area = length x width
Area = (5x + 1)*(3x - 2)
Area = 5x*3x + 5x*-2 + 1*3x + 1*-2
Area = 15x^2 - 10x + 3x - 2
Area = 15x^2 - 7x - 2 :)
Hey there!
A proportion is when two ratios are equal in terms of value.
Thank you! :D