A trapezoid with base measures of 23 km and 29 km has an area of 390 km2. find the height of the trapezoid. (Do not label. Use only the
numerical value in your answer.)

What is the volume of this square pyramid?

If a company produces x units of an item at a cost of $35 apiece the function c=35x is a of the total production costs

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)