192 feet
formula 1/2(b*h)n
1/2(6*8)8
1/2(48)8
24*8
192
Answer:
4a + 14
Step-by-step explanation:
This just means you must multiply every variable and number in the brackets.
2 x 2a = 4a
2 x 7 = 14
So now, it equals 4a + 14
I hope this helps!
As per the problem
A first number plus twice the second number is 7
Twice the first number plus the second totals 20
Let the first number is x and second number is y then we can write
![x+2y=7.........(i)\\ \\ 2x+y=20........(ii)\\ \\ \text{Now solve these two equations together , multiply equation 1 by 2 }\\ \text{and subtract from equation 2}\\ \\ \ \ 2x+y=20\\ -(2x+4y=14)\\ ------\\ -3y=6\\ -----\\ y=-2\\ \text{Substitute this value in equation one we get}\\ \\ x-4=7\\ \\ x=11\\ \\ \text{Hence the two numbers are }\\ x=11, y=-2\\](https://tex.z-dn.net/?f=%20x%2B2y%3D7.........%28i%29%5C%5C%20%5C%5C%202x%2By%3D20........%28ii%29%5C%5C%20%5C%5C%20%5Ctext%7BNow%20solve%20these%20two%20equations%20together%20%2C%20multiply%20equation%201%20by%202%20%20%7D%5C%5C%20%5Ctext%7Band%20subtract%20from%20equation%202%7D%5C%5C%20%5C%5C%20%20%20%20%20%5C%20%20%5C%202x%2By%3D20%5C%5C%20-%282x%2B4y%3D14%29%5C%5C%20------%5C%5C%20-3y%3D6%5C%5C%20-----%5C%5C%20y%3D-2%5C%5C%20%5Ctext%7BSubstitute%20this%20value%20in%20equation%20one%20we%20get%7D%5C%5C%20%5C%5C%20x-4%3D7%5C%5C%20%5C%5C%20x%3D11%5C%5C%20%5C%5C%20%5Ctext%7BHence%20the%20two%20numbers%20are%20%7D%5C%5C%20x%3D11%2C%20y%3D-2%5C%5C%20%20)
Parallelogram and rhombus are your answers