Suppose you are making a map of a square area. The dimensions of the actual area are 1,000 km by 1,000 km. You are drawing the map on a grid that is 10 cm by 10 cm. What scale would you use? Two cities are 820 km apart on the ground. How far apart are they on your map?

Aflute is on sale for 20% off. including the discount and 8% tax, the sales price is $216.

The sum of 5consecutive even numbers is 100. what is the first number in this sequence?

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)