A field of poppies has an area of 400 square meters. A random sample within the field has an area of 16 square meters and contains 23 California poppies.
Predict the number of California poppies in the entire field.
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Asmall (but heavy) particle placed in a glass of water will follow a zigzag motion because the particle will bounce off of the water molecules it meets. this is called brownian motion. a physicist simulates this on a computer, by varying the distance a particle can travel (called the mean free length), on average, before it collides with a water molecule and assigning the change in motion to be one of 8 directions, each with a similar probability. by running the simulated particle (with the same mean free length) many times she determines that it should take 15 seconds, on average, for the particle to fall to the bottom, with a standard deviation of 1.5 seconds. next she lets a real particle fall through a glass of water and finds that it took 18 seconds. what does she conclude, and why?

Type the correct answer in each box. use numerals instead of words. if necessary, use / for the fraction bar. consider the given table.

State one method by which you can recognize a perfect square trinomial.