Answer:
Step-by-step explanation:
The area of the current building is .
It is said that the building is scaled as 1:50.
So the model would be usually small so the area of the model would be
The area of the model is
Converting this into square centimetres we get
Hence this would be the area of the model.
Answer:
i think this is right
Step-by-step explanation:
4
The efficient green house gas is carbon dioxide gas
Answer:
x = 2, -4
Step-by-step explanation:
4x^2 + 8x – 32 = 0
Divide by 4
x^2 + 2x – 8 = 0
Add 8 to each side
x^2 + 2x = 8
Take the coefficient of x
2
Divide by 2
2/2 =1
Square it
1^2=1
Add it to each side
x^2+2x+1 = 8+1
(x+1)^2 = 9
Take the square root of each side
sqrt((x+1)^2) = ±sqrt(9)
x+1 = ±3
Subtract 1 from each side
x = -1±3
x = -1+3, -1-3
x = 2, -4
Answer:2
Step-by-step explanation:
2^2=4 and 2+2=4