Answer: Choice C) 5*sqrt(3) - 20*sqrt(2)Check out the attached image to see how I got that answer. Specifically look at figure 1. The other figures are supplemental steps to help break things up into a more organized solution (and to prevent too much clutter).
The idea I'm using to simplify is to basically factor the radicand (stuff under the radical or square root) into two numbers where one number is a perfect square. The goal is to pick the largest perfect square factor possible. Then I used the rule that sqrt(x*y) = sqrt(x)*sqrt(y) to break up the roots.
After each piece is simplified, the next step is to combine like terms. In this case, the sqrt(2) terms are combined.
Answer:
The generalization will be biased because people living in cities that are not as big as New York, Los Angeles and rural areas of the country were excluded from the possibility of being included in the sample.
Step-by-step explanation:
The sample is therefore not a true representation of the population.
Discriminant = b^2 - 4ac
a = 4
b = 16
c = 16
16^2 - 4(4 x 16)
256 - (4x64)
256 - 256 = 0
Therefore it only has one root