In ΔCDE, the measure of ∠E=90°, the measure of ∠D=72°, and EC = 86 feet. Find the length of CD to the nearest tenth of a foot.

How do the graphs of y = 1/x and y=5/x+6 compare?

What is the solution to the equation below? 3/x-2+6=square root x-2 +8

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)