Last year mark was 46 inches tall. this year ,mark's height is 3 inches less than peter's height. peater is 52 inches tall .how tall is mark? write an equation

Can you me find the slope! (30 points)

Find the maximum value of p= 4x + 5y subject to the following constraints :

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)