find the volume of a three dimensional solid whose base is the region bounded by the equation 4x^2 + y^2= 4 and whose cross sections are equilateral triangles when sliced perpendicular to the x axis

The annual earnings of a typical investor are question options: $1,000,000 to $10,000,000. $100,000 to $500,000. $60,000 to $200,000. $40,000 to $80,000.

100 points! striked out answers are wrong

In a recent telephone survey, 5,000 randomly selected teenagers were asked to cite their primary social network site. six of 10 teenagers said they use mybook as their primary social network site. a 95% confidence interval to estimate the true proportion of teenagers who use mybook as their primary social network site is found to be (0.2964, 0.9036). which of the following is a correct interpretation of the confidence level? ninety-five percent of all samples of this size would yield a confidence interval of (0.2964, 0.9036). there is a 95% chance that the true proportion of teenagers who use mybook as their primary social network site is in the interval (0.2964, 0.9036). ninety-five percent of the time, the procedure used to generate this interval will capture the true proportion of teenagers who use mybook as their primary social network site. ninety-five percent of all the samples of size 5,000 lie in the confidence interval (0.2964, 0.9036).