I have no clue I would help but have know clue
Answer:
1458 sq cm
Step-by-step explanation:
because each dimension of A is 3 tomes each dimension of B, that will mean that both the length and width of B are multiplied by 3 in order to get the length and width of A, so the area of B is length×width=162 and the area of A (in terms of B's dimensions) is 3xlength×3×width=9×length×width=9×162=1458 sq cm
No sé, prueba 2,3,5,7,11,13....
Hay muchos números primos!
![x = 5 \: and \: y = 1.](https://tex.z-dn.net/?f=x%20%3D%205%20%5C%3A%20and%20%5C%3A%20y%20%3D%201.)
Step-by-step explanation:
![7x + 4y = 39 \: - {eq}^{n} (1)](https://tex.z-dn.net/?f=7x%20%2B%204y%20%3D%2039%20%5C%3A%20%20-%20%20%7Beq%7D%5E%7Bn%7D%20%281%29)
![2x + 4y = 14 \: \: - {eq}^{n} (2)](https://tex.z-dn.net/?f=2x%20%2B%204y%20%3D%2014%20%20%5C%3A%20%5C%3A%20%20-%20%20%7Beq%7D%5E%7Bn%7D%20%282%29)
Multiply Equation no (1) with 2 and Equation no (2) with 7.
![14 x + 8y = 78.](https://tex.z-dn.net/?f=14%20x%20%2B%208y%20%3D%2078.)
![14x + 28y = 98.](https://tex.z-dn.net/?f=14x%20%2B%2028y%20%3D%2098.)
![( - ) \: \: \: ( - ) \: \: \: ( - )](https://tex.z-dn.net/?f=%28%20-%20%29%20%5C%3A%20%5C%3A%20%20%5C%3A%20%20%28%20-%20%29%20%5C%3A%20%20%5C%3A%20%20%5C%3A%20%28%20-%20%29)
![0x + -20y = - 20](https://tex.z-dn.net/?f=0x%20%2B%20%20-20y%20%3D%20%20-%2020)
![- 20y = - 20](https://tex.z-dn.net/?f=%20-%2020y%20%3D%20%20-%2020)
![y = \frac{ - 20}{ - 20}](https://tex.z-dn.net/?f=y%20%3D%20%20%5Cfrac%7B%20-%2020%7D%7B%20-%2020%7D%20)
![y = 1](https://tex.z-dn.net/?f=y%20%3D%201)
Substitute the value of "y" in Equation no (1)
![7x + 4y = 39.](https://tex.z-dn.net/?f=7x%20%2B%204y%20%3D%2039.)
![7x + 4(1) = 39.](https://tex.z-dn.net/?f=7x%20%2B%204%281%29%20%3D%2039.)
![7x + 4 = 39.](https://tex.z-dn.net/?f=7x%20%2B%204%20%3D%2039.)
![7x = 39 - 4](https://tex.z-dn.net/?f=7x%20%3D%2039%20-%204)
![7x = 35.](https://tex.z-dn.net/?f=7x%20%3D%2035.)
![x = \frac{35}{7}](https://tex.z-dn.net/?f=x%20%3D%20%20%5Cfrac%7B35%7D%7B7%7D%20)
![x = 5.](https://tex.z-dn.net/?f=x%20%3D%205.)