Which of these describes a circle with centre A? A The locus of points equidistant from both sides AB and BC. B A line segment starting at A that meets another the line segment at 90 degrees. C The shortest distance from A to any line segment. D The locus of points that lie a fixed distance from A. E The locus of points equidistant from both points A and B. Do not use a calculator

The following frequency table relates the weekly sales of bicycles at a given store over a 42-week period.value01234567frequency367108521(a) in how many weeks were at least 2 bikes sold? (b) in how many weeks were at least 5 bikes sold? (c) in how many weeks were an even number of bikes sold?

Which expression is rational? 6. , square root two, square root 14, square root 49

Unaware that 35% of the 10000 voters in his constituency support him, a politician decides to estimate his political strength. a sample of 200 voters shows that 40% support him. a. what is the population? b. what is the parameter of interest? state its value c. what is the statistics of the interest? state its value d. compare your answers in (b) and (c) is it surprising they are different? if the politician were to sample another 200 voters, which of the two numbers would most likely change? explain