The bar graph shows the average annual spending per person on selected items in 2010. The combined spending on housing, vehicles/gas, and health care was $13,811. The difference between spending on housing
and spending on vehicles/gas was $3872. The difference between spending on housing and spending on health care was $545.
Find the average per-person spending on housing, vehicles/gas, and health care in 2010,

Atorch and a battery cost 2.50 altogether.the torch costs 1.50 more than the battery.what fraction of the total price is the torch? give your answer in its simplest form.

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)

The blue segment below is a diameter of o. what is the length of the radius of the circle?