In a recent survey, 500 adults in the United States were asked if they thought the U. S. economy would improve in the next 4 years. Impa 58% of those surveyed answered "Yes". What is the standard deviation of a "yes" answer in this survey? Use the formula, o =Гnpq​

1c) the number 131 is a term in the sequence defined by the explicit rule f(n)=5n-4. which term in the sequence is 131? 2a) write the first four terms of the function f(n)=n^2-1 2b) what is the 10th term of the sequence defined by the explicit rule f(n)=n^2-1 2c) the number 224 is a term in the sequence defined by the explicit rule f(n)=n^2-1. which term in the sequence is 224?

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?

Find the equation of the ellipse with the following properties. the ellipse with foci at (0, 6) and (0, -6); y-intercepts (0, 8) and (0, -8).edit: the answer is x^2 over 28 + y^2 over 64 = 1