Add 14 to each side to undo the negative 14/negative sign. divide each side by 6 to undo the 6x, simplify=5
Answer:
- 18y = 1
Step-by-step explanation:
Adding the 2 equations term by term on both sides gives
(- 5x + 5x) + (- 9y - 9y) = (3 - 2), that is
0 + (- 18y) = 1
- 18y = 1
THE ANSWER IS B
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Step-by-step explanation:
The dimensions of the cuboid are 5 cm, 7 cm and 9 cm.
The formula for the surface area of the cuboid is as follows :
![A=2(lb+bh+hl)](https://tex.z-dn.net/?f=A%3D2%28lb%2Bbh%2Bhl%29)
We have,
b = 9 cm, l = 7 cm and h = 5 cm
So,
![A=2(9\times 7+9\times 5+7\times 5)\\\\A=2\times 143\\\\A=286\ cm^2](https://tex.z-dn.net/?f=A%3D2%289%5Ctimes%207%2B9%5Ctimes%205%2B7%5Ctimes%205%29%5C%5C%5C%5CA%3D2%5Ctimes%20143%5C%5C%5C%5CA%3D286%5C%20cm%5E2)
Jamie forgets to multiply 143 by 2 as the formula for surface area contains 2 as well.