Answer:
Step-by-step explanation:
I believe it’s false
Answer:
48
Step-by-step explanation:
A square has 4 sides of equal length. 12 x 4=48
Answer: The age of the twins is 10 years.
Step-by-step explanation:
Suppose the age of older sister be x
Let the age of twins sister be x-9, as they are born after 9 years.
Product of their ages be
![x(x-9)(x-9)\\\\=x(x^2-18x+81)\\\\=x^3-18x^2+81x](https://tex.z-dn.net/?f=x%28x-9%29%28x-9%29%5C%5C%5C%5C%3Dx%28x%5E2-18x%2B81%29%5C%5C%5C%5C%3Dx%5E3-18x%5E2%2B81x)
Sum of their ages will be
![x+x-9+x-9\\\\=3x-18](https://tex.z-dn.net/?f=x%2Bx-9%2Bx-9%5C%5C%5C%5C%3D3x-18)
According to question,
![1861+3x-18=x^3-18x^2+81x\\\\x^3-18x^2+81x-3x+18-1861=0\\\\x^3-18x^2+78x-1843=0\\\\x=19](https://tex.z-dn.net/?f=1861%2B3x-18%3Dx%5E3-18x%5E2%2B81x%5C%5C%5C%5Cx%5E3-18x%5E2%2B81x-3x%2B18-1861%3D0%5C%5C%5C%5Cx%5E3-18x%5E2%2B78x-1843%3D0%5C%5C%5C%5Cx%3D19)
So, Age of older sister will be 19 years.
Age of the twins will be
![19-9=10\ years](https://tex.z-dn.net/?f=19-9%3D10%5C%20years)
Hence, the age of the twins is 10 years.
The ratio to boys and girls would be 15girls and 13boys