The answer is 9 because if you find the two side lengths and find the area of the square then divide it by 2 it equals 9
200 times 40000 is 8000000.
200
x 40000
---------------
8000000
By using distributive property you can distribute (XYZ)4 and get a simplified answer of 4(x)+ 4(y) + 4 (z). The parenthesis show that 4(xyz) is not simplified and could also be written as 4(x)+ 4(y) + 4 (z).
The usual margin of error we strive for is a 95% probability that our estimate is within the margin. Assuming a normal distribution (and that we have a big enough sample not to worry about t tests) that corresponds to between minus and plus two standard deviations of the mean (remember the 68-95-99.7 rule). So our margin of error is plus or minus two standard deviations.
Answer: ±2%
Im pretty sure it’s going to be a, because when you divide by the -6 you’re supposed to switch the sign
