Which irrational number can be multiplied by –StartRoot 41 EndRoot to get a product that equals 1? StartRoot StartFraction 1 Over 41 EndFraction EndRoot Negative StartRoot 41 EndRoot Negative StartRoot StartFraction 1 Over 41 EndFraction EndRoot start root 41 EndRoot

The scatterplot below shows the number of hours that students read weekly and the number of hours that they spend on chores weekly. which statement about the scatterplot is true?

Anew test for ra is being developed. the test is administered to 750 patients with ra and 750 without ra. for the sake of the question, assume the prevalence of ra in this population is 50%. of the 750 patients with ra, 575 have a positive result. of the 750 patients without ra, 150 have a positive result. what is the positive predictive value of the new test? a575/(575+150) b. 600/(600+ 150) c. 575/(575+125) d. 600/(600+ 125)

Select the correct answer from each drop-down menu. a parabola is given by the equation y = x2 − 2x − 3. the directrix of the parabola is given by the equation . the focus of the parabola is .