The mean percentage of a population of people eating out at least once a week is 57%, with a standard deviation of 3.5%. assume that a sample size of 40 people was surveyed from the population an infinite number of times. in which interval will 95% of the sample means occur?

What is the expression in factored form? -20x^2 - 12x a. 4x(5x+3) b. -4x(5x-3) c. -4(5x+3) d. -4x(5x+3)

Find all solutions for 2y - 4x =2 y = 2x + 1 site: socratic.org

Select the correct answer from each drop-down menu. consider the following polynomials equations. 3x^2(x-1) and -3x^3+ 4x^2-2x+1 perform each operation and determine if the result is a polynomial. is the result of a + b a polynomial? yes or no is the result of a - b a polynomial? yes or no is the result of a · b a polynomial? yes or no